UK Border Agency

Immigration officers had the power of arrest and detention conferred on them by the Immigration Act 1971, when both at ports and inland. In practice, border force officers exercised powers under Schedule 2 of the Immigration Act 1971 and inland immigration officers under S28A-H of the Immigration Act 1971 and paragraph 17 of Schedule 2. This led to separate training for border and inland officers.

This act is applicable in England, Wales and Northern Ireland. "Designated Immigration Officers" are port immigration officers who have been trained in detention under PACE. UK Border Agency immigration officers wear a uniform with rank insignia. Enforcement immigration officers wear body armour and carry handcuffs and ASP batons.

Offices of the UK Border Agency in Sheffield

Customs officers had wide-ranging powers of entry, search and detention. The main power was to detain anyone who had committed, or who the officer had reasonable grounds to suspect had committed, any offence under the Customs and Excise Acts.[15]

The UK Border Agency occasionally removed foreign national criminals at the end of their prison terms. Over 5000 foreign national prisoners were deported each year. The agency also removed failed asylum seekers and others illegally in the UK. A 2009 report by the National Audit Office cited lack of detention space to support the asylum process. The agency had over 3000 detention spaces in removal centres run by private contractors or the Prison Service.[16]

Immigration control within the United Kingdom is managed within a wider Common Travel Area (CTA). The CTA is an intergovernmental agreement that allows freedom of movement within an area that encompasses the UK, Isle of Man, Channel Islands (Guernsey, Jersey, Sark and Alderney) and the Republic of Ireland. Authorised entry to any of the above essentially allows entry to all the others but it is the responsibility of the person entering to ensure that they are properly documented for entry to other parts of the CTA. Despite the CTA it is still possible to be deported from the UK to the Republic of Ireland and vice versa.

Entry to the UK via the Channel Tunnel from France or Belgium or by ferry through selected ports in north-east France is controlled by juxtaposed immigration controls in Britain, France, and Belgium, i.e. travellers clear UK passport control in France or Belgium and those travelling to France or Belgium clear French controls while in the UK. Belgium does not maintain controls in the UK as the first Schengen country entered is France. UK Border Agency checkpoints in France were operated at Gare de Calais-Fréthun, Gare de Lille Europe, Gare de Marne-la-Vallée–Chessy, Gare d'Avignon-Centre, Channel Tunnel, Calais ferry terminal, Dunkirk ferry terminal and Gare du Nord station, Paris. A checkpoint operated at Boulogne-sur-Mer until the port closed in August 2010. United States border preclearance is an equivalent system operated by that country's equivalent to the UKBA at some airports outside the US.

There have also been difficulties with the management of student visas under Tier 4 of the Points-Based System. The assessment of the Independent Chief Inspector, carried out between July and August 2010, found that there was an inconsistent response towards applications, with some cases given extra time to prepare and others dismissed for minor reasons.[17]

In November 2011, the Home Affairs Select Committee issued a report that found that 124,000 deportation cases had been shelved by the UKBA. The report said the cases had been dumped in a "controlled archive", a term used to try to hide the fact from authorities and auditors that it was a list of lost applicants.[18]

Following allegations that staff were told to relax some identity checks, in November 2011 the UK Home Office suspended: Brodie Clark, the Head of the Border Force;[19] Carole Upshall, director of the Border Force South and European Operation; Graham Kyle, director of operations at Heathrow Airport.[19] The Home Office is presently investigating allegations that Clark had agreed to "open up the borders" at certain times in ways ministers would "not have agreed with".[19] The BBC reported that staff may have been told not to scan biometric passports at certain times, which contain a digital image of the holder's face, which can be used to compare with the printed version and check the passport has not been forged.[19] It is also believed that "warning index checks" at Heathrow and Calais were also suspended, which would have applied strict security checks against official watchlists of terrorists, criminals, and deported illegal immigrants.[20]

After Clark refused the offer to take early retirement, he was suspended and the investigation began.[19] A two-week inquiry led by former Metropolitan Police detective Dave Wood, currently head of the agency's enforcement and crime group, sought to discover to what extent checks were scaled down, and what the security implications might have been. A second investigation, led by former MI6 official Mike Anderson, the Director General of the Home Office's strategy, immigration and international group, sought to investigate wider issues relating to the performance of UKBA regarding racism.

It was then announced on 5 November by Theresa May that an independent inquiry would also be undertaken, led by the Chief Inspector of the UK Border Agency, John Vine.[21] His report was published on 20 February 2012.[22] The Border Force became a separate organisation on 1 March 2012.[23]

In October 2014, the trial of the Reverend Nathan Ntege – accused of conducting almost 500 sham marriages at a church in Thornton Heath, South London between 2007 and 2011 – collapsed after it became apparent that evidence had been tampered with, concealed, or even possibly destroyed. As immigration officers were questioned in the witness box of the Inner London Crown Court it became clear that not only had video footage gone missing but that an investigation log had been tampered with. The trial was halted by Judge Nic Madge, who said in court: "I am satisfied that officers at the heart of this prosecution have deliberately concealed important evidence and lied on oath. The bad faith and misconduct started in 2011, when two of the principal defendants were arrested, and has continued throughout the course of this trial. In my judgment, it has tainted the whole case. It has tainted the prosecution against all seven defendants. It is a case in which the prosecution should not be allowed to benefit from the serious misbehaviour of the officer in the case or the disclosure officer". The Reverend Ntege and six other defendants were formally acquitted of all 17 charges, which related to marriages of convenience in order to bypass immigration laws. Channel 4 News later reported that three immigration officers had been suspended and that the Independent Police Complaints Commission (IPCC) would be conducting an investigation. The Crown Prosecution Service (CPS) said that it accepted that the handling of the case had fallen below acceptable standards and that it would conduct a full review.[24] Despite the collapse of the 2014 criminal case, in 2019 a Church of England disciplinary panel removed Ntege from his office and from the priesthood over complaints concerning marriages, their administration, and the improper retention of funds.[25]