FILE PHOTO: Britain's Chancellor Rishi Sunak holds a digital coronavirus disease (COVID-19) news conference with Deputy Chief Medical Officer, Dr Jenny Harries (not pictured) at 10 Downing Street, in London, Britain March 26, 2020. Pippa Fowles/10 Downing Street/Handout via REUTERS

LONDON (Reuters) - British finance minister Rishi Sunak is not self-isolating after Prime Minister Boris Johnson tested positive for coronavirus, a source at the finance ministry said.