Lateral flow test
Prime minister says lateral flow testing is more likely than vaccine passports as the UK comes out of lockdown.
Officials said the move is part of efforts to "normalise" testing in the workplace.
Government figures from Liverpool showed the pilot scheme of rapid turnaround testing missed half of all cases.
The PM hopes "Moonshot" lateral flow tests can help areas lift restrictions and people visit family in care homes.
The prime minister took a "lateral flow test" available to staff in Downing Street.
Latest research means "Operation Moonshot", the plan for mass self-administered home testing, is now a (more) realistic prospect.