In the UK, no-one is required to stay at home even if they have covid themselves. Many choose to, of course, and some employers may ask them to, but there is no rule.
@MartinII Crazy isn't it. We have one of the worst viruses to hit us for over a century and we can do what we like when we get it. However, if you get a stomach illness most workplaces - especially food establishments - require you to stay away for 48 hours.
