COVID passports in the United Kingdom

Trials to assess the effectiveness of an immunity passport scheme, also known as a COVID passport or COVID certification scheme, were confirmed by the UK government on 3 April 2021 as a way of helping to restart public events in England during the COVID-19 pandemic. The announcement was made following much discussion and speculation about the idea by politicians and in the British media. The government announced that trials of a scheme for England would begin on 16 April, starting with a comedy evening in Liverpool.
History.
The idea of some kind of immunity or vaccine passport was first mentioned in February 2021, when the Greek Prime Minister said his country would welcome British holidaymakers who had been vaccinated. The UK government ruled out the idea of issuing a vaccine passports for those who had been vaccinated. On 23 February, Prime Minister Boris Johnson announced a review into the idea of vaccine passports to allow people to go on holiday and into venues, describing the proposal as having "deep and complex issues". On 25 March, Johnson said an update on proposals would be given in April, but suggests it may not be possible to introduce such a scheme until every adult in the UK has been offered a vaccine.
On 2 April 2021, "The Daily Telegraph" reported that COVID passports would be trialled at a series of venues to test their use, prompting a group of more than 70 MPs from across the political spectrum to voice their opposition to the idea. The group, which included Jeremy Corbyn, a former leader of the Labour Party and Iain Duncan Smith, a former leader of the Conservative Party, describing it as "dangerous, discriminatory and counterproductive". In response the UK government said that no decisions had been made as regards the idea.
On 3 April the government confirmed that a COVID passport system would be trialled as a way of enabling large events, such as sports and music events, to restart. The first trial was announced to take place at a comedy evening at Liverpool's Hot Water Comedy Club on 16 April and continue at other events in England through to mid-May. The government subsequently confirmed that any such scheme would be time limited.
A 2021 FA Cup Semi-Final match on 18 April, the Carabao Cup Final on 25 April and the 2021 FA Cup Final on 15 May were also announced as potential candidates for trialling the scheme. The passport, a certificate, would be issued upon the supply of information including whether a person has been vaccinated, any recent negative test, or natural immunity through recent positive test.
On 11 May 2021, the UK government announced that from 17 May people in England who had received both COVID vaccines would be able to use the NHS app as a vaccine passport; a paper version would also be available by calling 119.