LSWR suburban lines

The town of Kingston upon Thames, at the time known simply as Kingston, was steadily growing and commercially active before the arrival of the railway.[4] When the main line was built, it passed 1.1 miles (1.8 km) south of the town, and a station was provided in the deep cutting there. The station was called "Kingston", but the existence of the station, and the convenience of travelling to London from it, prompted many streets to be laid out close to the station, and for a time the settlement was known as Kingston-upon-Railway. The 1841 Year Book of Facts says

Railway town—Upon the South-western line a new town, called Kingston-upon-Railway, is fast rising, 800 houses being built or in progress.[5]

The station name was later, on 1 September 1862, changed from Kingston to Surbiton.[note 2][6]

The LSWR suburban area system at the end of 1850

Early in the life of the new railway, Richmond was the heart of a lucrative residential area for developers generating significant travel to and from London: 98 omnibuses made the journey each way daily in 1844. Local promoters developed a scheme for a railway from Richmond to join the LSWR at Wandsworth and to extend the LSWR line north-eastward from near Nine Elms to Hungerford and Waterloo Bridges. Responsibility for the eastward extension passed to the LSWR, but the Richmond Railway Act received the Royal Assent on 21 July 1845. Three LSWR directors were on the board of the new company raising its nominal capital of £260,000 (equivalent to £27,000,000 in 2021).[7]

A few road bridges were built, the 1,000 feet (305 m) viaduct/bridge at Wandsworth over the Wandle (and the Surrey Iron Railway) and a deep cutting through about 0.5 miles (0.8 km) of Putney but via a flattish route, rural at the time, minimal other bridges, embankments or cuttings. Construction was swift and the line opened on 27 July 1846.[8]

This line runs due east: through Mortlake, Barnes, Putney and Wandsworth with stations for those parishes, the last close to the present Wandsworth Town station — about a mile from the LSWR Wandsworth station just within the Battersea boundaries, which was renamed Clapham Common at the same time. The line joined at Falcon Bridge, by today's Falcon Road, and ran alongside it, forming four tracks to Nine Elms.[9] The Richmond terminus was slightly south, by Drummond Place.[10]

In early years 17 trains each way between Richmond and Nine Elms.[11] The Richmond company sought to sell their line to LSWR and after some prevarication a merger was agreed, with a share exchange valuing Richmond shares at a premium, and with a Richmond director appointed to the LSWR board when a vacancy arose. The merger took effect on 31 December 1846.[11]

The Nine Elms station was never intended to be a permanent London terminal so in 1845 the LSWR obtained powers to extend to a more central site, Waterloo Bridge by that road bridge (changed to today's Waterloo in 1886). A second Act in 1847 authorised the extending of two further tracks, reflecting the separate Richmond Railway's completion in 1846.

The Nine Elms to Waterloo Viaduct ran through the residential Battersea and Lambeth ancient parishes and the construction displaced about 700 houses. Starting from an embankment near Nine Elms, this line was to assist with gradients and built on viaduct as was Waterloo station itself. The line, terminus and Vauxhall new stations opened on 11 July 1848. Waterloo Bridge station occupied ten acres, with six tracks serving four platforms[note 3] The terminus was a cheap, temporary structure.[12][13]

Waterloo was aligned to enable eastward extension, and on 26 August 1846 the LSWR obtained an Act permitting an extension to Borough High Street to face the London Bridge station of the South Eastern Railway (SER). This would have given public access to the City of London without building a railway bridge over the Thames. Some land was bought but in the slump following the railway mania the Company reflected on the huge cost of constructing an inner-urban line, and allowed the powers to lapse.[12]

Putney (Town) station at street level

This period in 1846 was the time of the railway mania, when all manner of railway schemes were being promoted with the promise, often unfulfilled, of making subscribers rich. The LSWR was not to be left behind, and now was pressing the Richmond line westwards, but was beset with multiple independent schemes competing for the same territory. These included, an 1846 'Windsor, Slough and Staines Atmospheric Railway' company which would probably have used broad gauge. However it was induced by the 'Richmond and Staines Junction Railway' company to form a joint venture, the Windsor, Staines and South Western Railway company (WS&SWR), rebuffing the overtures of an atmospheric railway. The new company was friendly to the LSWR and had Joseph Locke as its engineer.

The Company obtained a No. 1 Act on 25 June 1847. With capital of £500,000 it built the line from a junction with the Richmond railway to a terminus at an uninhabited location known as 'Black Potts' on the Thames 1,100 yards (1 km) north-west of Datchet. The exact route into Windsor, the intended terminus, was still under negotiation with the Commissioner of Woods and Forests. From Richmond the line ran a little north of the earlier terminus, which was unsuitable for conversion to a through station, crossing the Thames, and running through Twickenham and Staines. The Act also authorised a new loop line from Barnes, crossing the Thames and running through Brentford and Isleworth to Hounslow, and rejoining the Windsor line on the approach to Feltham.

The Great Western Railway (GWR) sought its own Windsor railway, for the great prestige of serving Queen Victoria, and had secured approval from the Commissioners over their proposed approach. For a time it appeared that the GWR would succeed and the WS&SWR company, having paid the £60,000, would be refused. However at last both companies obtained approval to come to Windsor — on 26 June 1849 the second Act benefitting the WS&SWR permitted the Windsor and Eton Riverside station, not quite so convenient for Windsor as preferred. Very convenient to Eton, stringent conditions were imposed to prevent scholars at Eton College from immoral or unlawful use.

Richmond Railway Bridge

Railway mania ended leaving few speculative investors, but the line from Richmond to Datchet was opened to the public on 22 August 1848. The extension to Windsor was delayed when the piers of the Thames bridge at Black Potts settled, and the line was opened belatedly on 1 December 1849,[8] 8 weeks after the GWR had reached its own Windsor station. Even then it was to a cramped temporary station; opening of the lavish permanent station, with Royal waiting room and cavalry entrance, was seventeen months later, on 1 May 1851.[11]

Meanwhile, the Hounslow loop had been progressing more slowly, reaching (Smallberry Green), Isleworth east of its successor by 22 August 1849 and completed to the junction on the heath in Feltham parish on 1 February 1850.[8]

The WS&SWR merged by share transfer with the LSWR on 30 June 1850.[11]

The LSWR obtained an Act on 16 July 1846 authorising a line from Weybridge via Chertsey to a terminus near Staines bridge, on the south side at Egham. However the WS&SWR No 2 Act (the No 1 Act was described under Windsor, above) foreshortened this Chertsey, Parliament preferring to let the WS&SWR have scope take territory between Staines and Pirbright with a southerly Chertsey line proposal of its own. The slump following the railway mania killed off this WS&SWR scheme, but by then the LSWR was opening from Weybridge to Chertsey, on 14 February 1848.[11]

Hampton Court station at its opening

After the opening of the main line, Hampton Court Palace attracted 178,000 visitors annually, many arriving by steamer. The LSWR decided to construct a short branch line, and it was opened on 1 February 1849.[14] There was one intermediate station at Thames Ditton, opened in November 1851.[note 4][15][16][17]

In the early days there was a report of the branch being worked by horse traction, but it is not clear if this was a regular or long-lasting arrangement.[18][19]

The LSWR suburban system in 1862

The proximity of the unconnected railways immediately west of London led to a number of failed schemes, until in 1851 the North and South Western Junction Railway (N&SWJR) built a line just under 4 miles long from an east-facing junction at Willesden to Kew Junction (later by Kew Bridge station), facing west in the east side of Brentford.[11][7]

The line was to be worked by the LSWR and the London & North Western Railway (LNWR) jointly, but at first the larger companies delayed providing the trains service. Eventually a goods service was started on 15 February 1853, followed by passenger traffic on 1 August 1853: four North London Railway trains daily ran from Hampstead Road (connection from Fenchurch Street) to Kew; the N&SWJR had its own Kew station just short of the LSWR line—a temporary platform at first.[11][13][20]

Overcoming the reluctance of the LSWR, the N&SWJR started to run through to Windsor, with three additional trains from Hampstead Road to Windsor from 1 June 1854, a service which ended that October.

Responding to pressure for alternative London services to Richmond and its Windsor via Staines and Twickenham line, the LSWR arranged with the N&SWJR to run a Twickenham - Richmond - Hampstead Road service, reversing at Barnes and again at Brentford ('Kew Junction'); some LSWR coaches continued to Fenchurch Street, London. The service started on 20 May 1858. The two reversals were obviously extremely inconvenient, and the LSWR, warming to the N&SWJR, obtained powers to build an east curve at the part of Brentford freely named Kew Junction and a west curve at Barnes; they opened on 1 February 1862. Williams points out that the passenger timings hardly improved, the Kew Junction to Richmond times reducing from 19 minutes to 16 minutes. The junction was closest to the LSWR station and it built platforms on the north-east curve for the new northbound train service. The original north-west and east-west Kew Junction was renamed Old Kew Junction.[11][20][note 5]

Contemporary engraving of the Vauxhall station fire

Vauxhall station suffered an immense fire on Sunday 13 April 1856; the fire was observed at 8.15 p.m. to be burning a canvas and paper wall in a passage leading to some offices. A train actually passed through the conflagration and another stopped at the station to set down passengers, before the local traffic manager was able to take charge and divert up trains to the old Nine Elms station. The entire timber station building burnt down. Nonetheless the permanent way was not much damaged and trains ran as usual the following day.[21]

In the early years of the 1840s the thoughts of the Company turned to the area towards Epsom and beyond. However both the London and Brighton Railway and the London and Croydon Railway considered the area attractive to them, which might enable a line to Portsmouth. A series of bilateral agreements were concluded undertaking not to encroach on other lines' presumed areas of influence.[note 6]

At this period Parliament commissioned an external panel of experts, the so-called Railway Kings, to adjudicate preference between competing schemes and to assess practicability and desirability, and this led to the suppression in 1844 of a LSWR proposal to reach Epsom; a further Bill was rejected in 1846. However, in that year the London, Brighton and South Coast Railway (LBSCR) was formed by the amalgamation of the Croydon and Brighton companies, and in 1847 the LBSCR opened the line from its (West) Croydon station to Epsom. The LSWR turned its focus more towards Portsmouth, Guildford and Chichester, which also proved contentious.[22]

In 1855-1856 two semi-independent companies were promoted, the Epsom and Leatherhead Railway (E&LR) and the Wimbledon and Dorking Railway (W&DR). They obtained Parliamentary authorisation, the E&LR on 14 July 1856, to run from the LBSCR station at Epsom to Leatherhead. The W&DR obtained authority on 27 July 1856 for a line from near Wimbledon to join the E&LR a little to the west of the LBSCR Epsom station, and also to build from Leatherhead to Dorking.

The W&DR was dependent on the LSWR, but the E&LR was independent, and looking for a larger company to work it, it found the LSWR unwilling, because of its territorial agreement with the LBSCR. The E&LR directors now approached the LBSCR who agreed to work the line, in contravention of the same agreement. However E&LR shareholder dissatisfaction was evident, not least because the LBSCR route to London (London Bridge station via Croydon) was much longer than the route to Waterloo. An Extraordinary General Meeting was called, and the Board was instructed to negotiate further with the LSWR, and this resulted in the LSWR winning control of the E&LR. They leased and opened the single track line on 1 February 1859 between Epsom (LBSCR station) and Leatherhead. The LSWR provided seven trains daily, connecting with the LBSCR trains at Epsom.

Soon the LSWR was able to open the leased W&DR line between Wimbledon and the junction near Epsom, on 4 April 1859, enabling their trains to run to Leatherhead. Wimbledon station was then south-west of Wimbledon Bridge, and the new line ran parallel to the main line from there as far as the present-day Raynes Park station. At first there was no Epsom station on the route, but four days later Parliament authorised the construction of a new station at the junction. It was built so that trains from the LBSCR station passed through, platforms only being provided for trains from the Wimbledon line.

On 29 July 1859 the LBSCR and the LSWR agreed to make the E&LR joint between them, and to double it when required, and from 8 August 1859 LBSCR trains started running over the E&LR. The joint ownership of the E&LR was authorised by Parliament, and was approved by shareholders on 30 September 1861.[22]

When Epsom junction was enlarged and the line doubled, the two centre tracks led served the onward LBSCR station, and platforms were restricted here to LSWR trains. This arrangement lasted until 1929.[23]

After proposals to extend westward from Staines failed in Parliament the depression following the Railway Mania seemed ever deeper and the LSWR did not progress the schemes further. Local interests were reluctant to see their railway ignored thus the Staines, Wokingham and Woking Junction (informally 'and Reading') Railway company was formed[note 7] on 8 July 1853 to make a line from Staines (LSWR) to a junction with the South Eastern Railway's Redhill, Guildford and Reading line at Wokingham. Running powers over the SER line were obtained, and narrow gauge track into Reading station on the Great Western Railway gave the SW&WJR trains access to Reading.

Included were unexercised powers to make a branch to Woking via Chobham.[24]

The line opened from Staines to Ascot on 4 June 1856 and from there to Wokingham on 9 July. The Wokingham line was worked by the LSWR and later absorbed by it.[7][25][22][26]

Wraysbury station was moved about a quarter mile towards Staines on 1 April 1861.[25][27] The old site was served only by a footpath; perhaps due to objection by the occupier of Wyrardisbury House. The new station is also often referred to as Wyrardisbury on the Ordnance Survey maps of the period.[28]

The LSWR suburban system in 1869

After the extension to Waterloo Bridge in 1848, the Company had a terminal reasonably close to the commercial areas of London. Yet as business travel increased over the years, its inconvenience to parts of the City of London became increasingly objectionable. However early efforts to get access to Cannon Street had seen short-lived success, where the South Eastern Railway defended its investment.

The LSWR had more success with the London, Chatham and Dover Railway (LC&DR). By Acts of 1860 and 1861 the LC&DR was authorised to build a line from Herne Hill quite near Clapham to Ludgate Hill in the City, crossing the Thames at Blackfriars, and the short way to the LB&SCR and the West London Extension Railway and the LSWR. Further Acts in 1864 and 1866 ratified changes of plan, but the friendly relations culminated in an Agreement between the LSWR and the LC&DR dated 5 January 1865.[note 8] An arrangement for sharing ticket income was reached.

The LC&DR had already opened its line from Victoria to Bromley, but it now opened its Ludgate Hill line striking north from Loughborough Junction, and a link to the LSWR at Clapham Junction. From 3 April 1866 LSWR trains ran from Kingston, Richmond and Hounslow, via Clapham Junction, Wandsworth Road and Loughborough Road to Ludgate Hill.[29][30]

Kew River Bridge under construction

In the 1860s, numerous new schemes were promoted for railways to reach Richmond, causing LSWR alarm for its primacy in Richmond and both it and the N&SWJR alarm for their '(north) Kew' Brentford station. After much wrangling, the LSWR obtained an Act on 14 July 1864 for a line from the north end of Kensington through Hammersmith to Richmond. The West London Extension Railway had opened in 1863, connecting to the LSWR at Clapham Junction. The LSWR had subscribed one-sixth of the capital cost of the new line, which was operated as a joint line. In 1863 the east facing spur to West London Junction opened,[20] giving direct access from Waterloo to Kensington. Kensington station had been slightly relocated, considerably expanded, and renamed Kensington (Addison Road).[13] As a minority partner in the WLER, the LSWR's right to run north of Kensington, even for a few hundred yards, was contentious. This Bill had been hastily prepared and further Acts were obtained in 1865, 1866 and 1867 making a number of improvements.

The LSWR's new route opened on 1 January 1869; it was from Richmond Junction north of Kensington, turning south through its own Shepherds Bush and Hammersmith (Grove Road) stations, and it then turned west along the alignment that is now the District line from Ravenscourt Park to Turnham Green, then turning south-west through Brentford Road station (now called Gunnersbury), crossing the Thames to Richmond. A short spur was also opened from Acton Jn (later South Acton Jn) on the North and South Western Junction Railway to a junction at Brentford Road, giving the NLR direct access to Richmond. The main line ran to a terminus at Richmond, adjacent to the LSWR through station; this prevented the North London Railway (NLR) from petitioning for running powers to continue westward over the Staines lines, to Windsor, Reading or Woking.

The LSWR allocated six of Beattie's 2-4-0WT locomotives to the new service.[31]

This access removed the requirement to accept trains from the N&SWJR via the north-facing 'Kew' and south-facing Barnes curves, the former being mothballed and the latter later removed. A new spur was opened from south of Brentford Road (Gunnersbury) to the Hounslow Loop, referred to as The Chiswick Curve and also a connection was made at Hammersmith with the Hammersmith & City Railway; these probably opened on 1 June 1870.

The LSWR now ran trains from Waterloo to Richmond via Kensington (Addison Road) and Hammersmith, and also from Ludgate Hill to Richmond.[29]

All of this activity was a strategy to minimise other railways' access to all points south and west of Richmond and if possible that town. The last bid failed: as well as the North London trains from Broad Street in the City of London, Richmond gained (from 1 June 1870) GWR trains arriving from Bishops Bridge Road via the Hammersmith & City Railway. In 1875, the Metropolitan District Railway made a short connection westward from its Hammersmith station to the LSWR at Studland Road Junction in that town enabling its trains to reach Richmond, from 1 June 1877. This straight combination forms today's District line.

In 1868 the Midland Railway had made a connection between Cricklewood and the N&SWJR, and it had been contemplating a purchase of the N&SWJR. To deflect from southward ambitions, the LSWR built a north-to-east curve (the Acton Curve) from Bollo Lane Junction to Acton Lane Junction, giving access to trains approaching from Willesden or Cricklewood eastwards to Hammersmith and Kensington. Midland coal trains started using this to Kensington (High Street) from 4 March 1878, and also for a time ran passenger trains to Richmond from Moorgate Street via Cricklewood.

Kingston station at its opening in 1863

The town of Kingston had had its somewhat remote station on the main line from the outset and the LSWR obtained powers to reach the town centre, from the north-west. The line was authorised on 6 August 1860, a single arc from Twickenham, approaching Kingston from the west. There was pressure to terminate the line on the west side of the River Thames, at Hampton Wick. This would have required passengers arriving to pay the halfpenny toll to cross the river bridge on foot to Kingston.[18] The LSWR did not wish to open a Hampton Wick station. However the Lords Committee had inserted a clause requiring them to make and maintain a Hampton Wick station as well. The line opened on 1 July 1863, with stations at Teddington, Hampton Wick and New Kingston. As well as LSWR trains, the North London Railway operated passenger trains to Kingston under a duty on LSWR in an earlier Act.[32]

In 1855 the Wimbledon and Croydon Railway had opened between those places[note 9] via Mitcham,[7] and the railway was absorbed by the LB&SCR in 1858. At Wimbledon the line curved in from the south-east and ran to a separate station north-east of Wimbledon Bridge. The LSWR passenger station was south-west of the bridge, and the W&C line had a separate spur connecting to the LSWR south-west of the station.

In 1864 the Tooting, Merton and Wimbledon (TMW) Railway got its Act for a line from Streatham Junction to Wimbledon, including two routes from Tooting to Wimbledon forming a loop, combined with the Wimbledon and Croydon Railway north-west of Merton.[note 10][29][33][7]

By the TMW Extension Railway Act of 5 July 1865, the powers of the original company were taken over by the LSWR and LB&SCR jointly. The LB&SCR granted running powers to the LSWR to London and also Crystal Palace, and over the Merton to Wimbledon section of the W&C line. They also agreed running arrangements for goods traffic to Deptford Wharf. At this time the LC&DR opened a spur from Herne Hill to Knights Hill (later Tulse Hill); oddly, they seem to have been alarmed that the LB&SCR granted the running powers to the LSWR to pass through Knights Hill.[34]

The TMW lines opened to LB&SCR trains in October 1868 and to LSWR trains on 1 January 1869. The LSWR could now run to Ludgate Hill from Wimbledon via Tooting, Streatham and Herne Hill.[29]

On the line from Streatham Junction, the stations were Tooting Junction, in the nook of the junction, followed by Haydons Lane (renamed Haydons Road on 1 October 1889).[27][note 11][35]

The TMW station at Wimbledon was north-east of Wimbledon Bridge, while the LSWR main line station was south-west of it. The earlier spur from the W&C line to the LSWR was now unnecessary (as the TMW made its own connections) and was abandoned.

On the southern arm of the route from Tooting Junction to Wimbledon, the intermediate Morden station was 'Merton Abbey', followed by a station Lower Merton at the point of convergence with the Wimbledon and Croydon line. At first the platforms were only on the Tooting line. The TMW line was double track, but the W&C line was single at the time, being doubled between Lower Merton and Wimbledon in 1868. A platform on the Croydon line was provided from 1 November 1870, and the station name was changed to Merton Park on 1 September 1887.[35]

In 1861 promoters raised funds for connecting the Thames Valley towns and villages perhaps from Isleworth and certainly through Richmond, Hampton and Shepperton, ideally being a south-west link from the GWR to the Southampton line. City access would be via the Metropolitan Railway at Richmond. They formed the Metropolitan and Thames Valley Railway (M&TVR), and planned to make a railway for passengers and goods connecting to the metropolis, as well as to Chertsey for westward connection, and they contemplated mixed gauge. This hugely ambitious scheme needed a friendly sponsor, but the GWR was ungenerous, and the LSWR, desperate to keep the broad gauge rails out of its territory, agreed working arrangements only for a branch from the LSWR Twickenham to Kingston arc to Shepperton. Altering its name to a more realistic Thames Valley Railway (TVR), it obtained an authorising Act on 17 July 1862.

Many original supporters were disappointed at the limited scope of the proposal and withdrew, but the line opened as a single line on 1 November 1864, from Thames Valley Junction (now 'Strawberry Hill' or 'Shacklegate'). The line was now effectively a branch of the LSWR and amalgamation was formalised, effective from 1 January 1867. Doubling from the junction to Fulwell was probably completed in the same year, and in stages the whole line was doubled by 9 December 1878.[36]

Residents of the market town had long complained about their station, which was a terminus on a branch from Weybridge. On 23 June 1864 powers were included in the LSWR's Act to build a line from Virginia Water to Chertsey connecting end-on with the existing branch, and to re-site the station to the north of Guildford Road level crossing. Virginia Water already on an 'independent' railway worked by the LSWR, led to trains to Reading as well as Staines through a triangle junction there. The line opened on 1 October 1866; it was double track except for the westward spur at Virginia Water.[37]

The original Leatherhead station on the Epsom & Leatherhead Joint line was described as temporary, and was inconveniently far from the town centre, north-east of Kingston Road. In 1863 the LB&SCR promoted a Bill to extend to Dorking, with a new station in Leatherhead itself. The LSWR requested that the extension and station should be joint like the E&LR line, but the LBSCR were unwilling. A compromise was reached in which land would be purchased, sufficient for both companies to have stations alongside one another; the LB&SCR station was to be aligned towards Dorking, and the LSWR station towards a possible later extension to Guildford. The LSWR part of this arrangement was authorised by Act of 25 July 1864 and the new stations and double track throughout the E&LR, opened on 4 March 1867.[37]

Kingston-upon-Thames station about 1905

The LSWR Kingston branch approached from the north in a wide arc; now in 1865 the company proposed to connect the town to a widened original main line, crossing Richmond Road by a level crossing, and passing under the main line near the present New Malden, running eastwards alongside the main line to Wimbledon. An Act of 16 July 1866 modified the scheme, authorising the high-level, through station at Kingston and crossing Richmond Road by a bridge. The line opened on 1 January 1869 including its Norbiton station and at Malden it burrowed under the main line and ran to Wimbledon on the south side of the line, being joined by the Epsom branch at the present Raynes Park and the Tooting Merton and Wimbledon line immediately west of Wimbledon station. There seems to have been no connections between the double track for the branches and the main line at any point west of Wimbledon itself.[38][39]

The District Railway had opened as far as Fulham (Walham Green) in 1880 and was contemplating an extension south of the River Thames. A Guildford, Kingston and London Railway was projected, intending to connect into the District railway and use its central system to reach the City of London. The LSWR formed an alliance with the District, to oppose the Guildford scheme; this was successfully achieved, and the LSWR and the District Railway were to build a line between the District's station at Fulham and Wimbledon. Mutual running powers were to be agreed, giving the LSWR access to South Kensington and High Street Kensington, and the District to Wimbledon.

In fact the District Railway did not have the money to fund its share of the new construction, and the LSWR took over the construction from Putney Bridge (District Railway station) to East Putney, crossing the Thames, and from there to a new section of Wimbledon station. There was also a flying junction at East Putney to the Richmond line towards Wandsworth.

On 3 June 1889 District Railway trains started operation, and on 1 July 1889 the spurs to the Wandsworth line at East Putney were opened, and the LSWR started operating passenger trains from Waterloo to Wimbledon, running to the LSWR main station there.

LSWR usage was disappointing, and the District Line passenger operation was dominant. The line was electrified on the fourth rail system for District Line trains, from 27 August 1905, with a significant enhancement of service frequency. The LSWR suburban electrification scheme connected into the line from 25 October 1915, with adaptations to enable the third and fourth rail systems to co-exist.[40][41][42]

The LSWR had leased the Staines, Wokingham and Woking Junction line from the outset, but found relations with the owning company difficult. At the same time Ascot was growing in importance, and a southward branch from there to Aldershot was being planned. By Act of 4 July 1878, the LSWR purchased the company.

The LSWR obtained authorisation on 20 August 1883 to build a morth-west curve at Staines, allowing through running from Windsor to Virginia Water and beyond either west or south. This opened on 1 July 1884, and at the same time a new station, Staines High Street, was opened, as trains using the new curve would by-pass the existing Staines station. The same Act authorised a west curve at Byfleet, enabling direct running from Chertsey towards Woking, and this opened on 10 August 1885, although it appears not to have had a regular train service until 4 July 1887.[37]

For some years after the opening of the main line, little attention could be given to developing the new network and extensions and additions were made incrementally, with little attempt at proper integration. The ramshackle state of the Waterloo terminal was testimony to this, but the growth of traffic poses major challenges in operating the main line .

Nine Elms was the chief goods terminal for London with extensive sidings and yards. Locomotive workshops were here on the south side, part of which was absorbed in the mid-1870s by a new main line viaduct between the Wandsworth Road tunnel and New Road (now Thessaly Road). The four track main line was diverted progressively, tracks opening between 22 October 1877 and 21 July 1878. Widening followed westward (Queens Road (Battersea) to 'Clapham Junction') on 1 November 1877.

Since the opening of the Epsom line there had been four tracks between Wimbledon and the present-day Raynes Park. This extended to the next stop when the Kingston line opened; arranged as two double track parallel railways. Here both tracks for the Kingston loop-with-branch went under the main line to progress north-westwards.

Here a double-line junction (at the west end of Coombe & Malden station (i.e. New Malden)) was passed by the Board of Trade on 24 April 1880, enabling the four tracks to act roughly as a four-track line. Quadrupling throughout between Clapham Junction and Hampton Court Junction was progressively completed by 1 April 1884, with the tracks paired by direction (Up Local, Up Through, Down Through, Down Local.[note 12]) A new spur was provided at Malden for the loop-with-branch and a new tunnel at Raynes Park brought the Up Epsom line under the main line to join the Up Local Line, burrowing junctions.

Accordingly, a new combined and extended Wimbledon station north-east of Wimbledon Bridge was opened, on 21 November 1881, and terminus for the Metropolitan District Railway's trains.[35][37]

By 1890 to Hampton Court Junction was four-track and three-track (only one down) to Woking.[43]

Residents of Cobham had long called for a railway, and a number of schemes were put forward, and failed. After a complex of schemes, Acts in 1881, 1882 and 1883 authorised what became the Guildford New Line, running from the main line at Long Ditton via Cobham, with a branch from the Leatherhead terminus joining it at Effingham, without a junction station until 1885.[37] Although the line was planned to serve local stations only, it gradually received through Portsmouth trains in the final years of the nineteenth century.[43]

The Shepperton branch had been served from the north at Thames Valley Junction, so that direct running from Kingston was not possible. This was rectified when the south curve from Shacklegate Junction to Fulwell was opened on 1 July 1894,[44] Advertised passenger operation did not start until 1 June 1901.[45]

A Twickenham flyover, leading the up line from Shepperton and Kingston over the Ascot line was opened on 22 October 1883. This was the first grade-separated junction on the LSWR.[37]

Tooting station was moved east of London Road on 12 August 1894.[35]

The City and South London Railway (opened 1890) was the first deep-level tube railway in the world[46] closely followed by the Central London Railway and the Waterloo and City Railway. A minor tube railway mania followed, threatening LSWR territory, proving complimentary rather than competing: the Baker Street and Waterloo Railway provided better access from Waterloo to the 'West End'. However they demonstrated that electric haulage was superior to steam haulage in enabling a clean air environment at stations and in the trains, as well as technical benefits of increased acceleration and cheaper running.

At the outset of the twentieth century, the Metropolitan District Railway (MDR) was planning to run electric trains to Wimbledon from Putney Bridge, extending its existing service. With LSWR co-operation the four-rail electrification was installed and District electric trains reached there on 27 August 1905. The line voltage was 600 V DC.

This led to a proposal for the MDR to extend from Wimbledon to Sutton, and to quadruple the Putney to Wimbledon section which was already suffering from congestion. The idea was eventually dropped, but intermediate block posts were provided between Putney and Wimbledon to reduce section time and increase capacity.

The MDR finally began to run on the LSWR line between Studland Road Junction (Hammersmith) and Turnham Green. This too was electrified, with the MDR Ealing service running as electric trains from 1 July 1905, and the Richmond service on 1 August 1905. The considerably enhanced and frequent train service operated by the MDR led them to propose quadrupling the track on this section. This was agreed and it opened for operation on 3 December 1911, with a burrowing junction at Turnham Green for Up District trains; the gradient was steep for goods, at 1:50 so a flat junction was provided, eastward, for Midland Railway coal trains.[43]

From 1911 the London and North Western Railway (LNWR) proposed electrifying its North London Railway, which it managed. It came to an arrangement with the LSWR whereby the latter's part of the routes to Richmond and Kew Bridge would be electrified for the LNWR trains (where they were not already electrified for the District Railway trains). The LNWR electric service started on 1 October 1916.

Declining traffic on the passenger trains via Kensington and Richmond via Studland Road Junction, and wartime stringency, led to their ending on 5 June 1916; they had already been cut back to start from Clapham Junction instead of Waterloo. The LSWR track (Hammersmith to Turnham Green) was transferred to the Underground group for the extension of the Piccadilly line in 1932.[47]

The Wimbledon - Tooting - Herne Hill - Ludgate Hill service was discontinued from 1 January 1917, and the LB&SCR local trains from Wimbledon to Streatham were also curtailed, leaving that route section with no passenger service. The LSWR was restored on 27 August 1923 (under LSWR's amalgamated successor).

The Windsor to Woking service was withdrawn on 31 January 1916 so Staines High Street station, on the mothballed Staines West Curve, was demolished.[43]

In the late 1880s, Hampton Court was a flat junction serving main lines (see widening, as well as the Hampton Court branch and the Guildford New Line via Cobham. Powers were taken (20 July 1906) to provide a grade-separated junction: the Up Cobham line was brought under the main line and opened on 21 October 1908 and the more expensive flyover for the Hampton Court branch, ascending on viaduct from Surbiton station opened 4 July 1915.[43]

The trains operated on a regular interval timetable, at first the same frequency through the peak hours, with the train formations being strengthened at those times. The new electric service was a considerable success, and there was some overcrowding. The Guildford new line was served by push-and-pull trains connecting with the electric trains at Claygate, but to release electric stock to strengthen trains in the core electric area, the Claygate service was discontinued (and reverted to steam operation). This was done in July 1919, and the Claygate line did not receive regular electric trains until the entire Guildford New Line was electrified in 1925.[49]

From 1919, additional capacity was created by converting further steam stock to two-car trailer units, to operate between two ordinary three-car units, forming an eight-car train. It had been found that the three-car units had power to spare. The trailer units had no driving compartment.

World War I and following British industrial shortage prevented progress: the second stage of electrification, covering the outermost suburban lines; and a grade-separated junction at Woking, but this was deferred (and never built). There was no further LSWR electrification before the Grouping of the railways under the Railways Act 1921 by which the Southern Railway was created from the LSWR, the LB&SCR, the South Eastern and Chatham Railway (SE&CR), and some minor lines; this took effect 1 July 1923.[note 15]

The Grouping was known about well before its implementation—for a time, nationalisation had seemed a possibility—but this did not quell electrical and operational bigotry. The LB&SCR were anxious that their 6.7 kV overhead system should be adopted as the standard, and at this time the SE&CR had been planning electrification of its system on a 3 kV overhead system.[48]

The original 84 cars ran as "bogie-block" sets, semi-permanently coupled, built at Eastleigh between 1902 and 1912. They were wooden bodies with semi-elliptical roofs.

The conversion was carried out at Eastleigh works, and the electrical equipment where much of the body and running gear conversion was carried out by the British Westinghouse Electrical and Manufacturing Company.

The formation was two motor coaches with a driving compartment and "brake" compartment at the outer ends, with a trailer between them. The outer bogie at each end of the unit was a motor bogie fitted with two axle-hung[note 16] traction motors rated at 275 hp (205 kW). A bus line[note 17] ran along the roof of the unit connecting all the current collector shoes, and if two units were coupled, connected the entire train.

The master controller had four positions: switching, full series, parallel, and full parallel. Control equipment shunted out starting resistances automatically as speed increased and current drawn fell. In practice drivers could move the controller to full parallel immediately on starting, and the control equipment would lower resistance without intervention. The notching process produced a series of sharp clicks, and the units were nicknamed "nutcrackers" from this cause. The specified maximum running speed was 52 mph (84 km/h), although a maximum speed in service of 40 mph (64 km/h) was imposed due to rough riding at higher speeds.

The Westinghouse quick-acting brake was installed in place of the automatic vacuum brake as it allowed faster stops and restarting, important for a high-frequency urban railway. Within the unit the couplings were semi-permanently fixed with a bar coupling, but conventional couplings were provided at unit ends; in addition were the power jumper for the bus line and an eight-core control cable, as well as the Westinghouse brake pipe coupling.

For reasons of style, the units were given a blunt torpedo shaped end with a domed roof at the ends; a new livery was provided, of sage green, with black and yellow lining and mid-brown window mouldings, and the roof was coloured off-white. The width over body was 8 ft 0¾ in (2.46 m), and 8 ft 10¾ in (2.71 m) over handles. An external opal panel was provided at each end of the unit between the motorman's windows, for a stencil plate, a letter indicating the route (which was illuminated at night).

The units only provided first and third class accommodation all in compartments.[48]

The success of the new electric service was such that severe overcrowding took place at busy periods, and in 1919 the LSWR decided to build some two-car trailer units. The electric units had plenty of power and steam coaching vehicles were cheaply converted, so that eight-car trains could be formed by inserting one trailer between two three-car electric units. To shunt such trailer units off at the end of the busy periods was a difficult procedure therefore, but they were a cheap and quick expedient to relieve the overcrowding. 24 of these units were built in the period January 1920 to December 1922.[48]

Wimbledon station was completely reconstructed, seamless to its street like Richmond, 1927-8, combining the joint LB&SCR section and the District Railway sections, retaining identifiably distinct platforming arrangements.[35]

When the main line was quadrupled in the early years of the twentieth century, the tracks allocated to stopping trains were on the outside with the main lines in the centre: "pairing by direction". This makes the main lines safe everywhere except at one point: that local trains must cross both main lines (before or after a terminus) to account for their change in direction. This made sufficient gaps relatively short, even given advanced signalling.

To cure delays a flyover was built east of Wimbledon, carrying the north outer line across the two central lines, so that from there to Waterloo up and down slow lines were on the south side "paired by use". The new layout was brought into use on 17 May 1936.[35]