The prime minister is to announce the rollout of the lateral flow tests at a press conference on Monday afternoon, at which he will also outline a programme of trial events for mass gatherings, as well as proposals for potentially restarting foreign travel.

The testing scheme, involving kits for use at home or at test centres, workplaces and schools, is billed as a means to limit any continued community transmission of the virus, in parallel with the vaccination programme, and as a way to track outbreaks of potentially vaccine-resistant Covid variants.

The test-and-trace phone app will also be updated so that when pubs and other hospitality venues reopen everyone in a group will have to register, not just the lead person, with those who test positive asked to share other places they have visited.