Immediately after his election, Sir Keir called Johnson and offered his help “on how best to respond” to the outbreak.
The lockdown restrictions, unprecedented in modern peacetime, have changed the lives of Britons completely.
Carrie Symonds is believed to be self-isolating at her and Boris Johnson's home in south London following his positive test for coronavirus.
UCL professor Susan Michie said the virus was likely to have been spread during face-to-face sessions in the House of Commons and other transmission routes.
Here is everything you need to know about Johnson’s positive test, and the implications it has for the government’s coronavirus response.
Political friends and adversaries from across the board are wishing the prime minister well after he tested positive for COVID-19 on Friday.
Mayor of London Sadiq Khan said many of those still travelling are freelancers or on zero hour contracts.
The prime minister has been asked to provide clarity on the stringent measures he introduced to tackle the outbreak.
Boris Johnson has announced a dramatic escalation in draconian measures designed to stop the spread of coronavirus
The prime minister has warned tougher measures will be introduced if people continue to flout social distancing advice.
Labour MP and practising doctor Rosena Allin-Khan has urged the PM to be clearer about social distancing guidelines.
Yahoo UK will be streaming the press conference live each day so you can keep up with all the latest announcements.