Please don't have a go with all guns blazing - this is a 'what if ' question and hasn't happened!
My cleaner is willing and allowed to continue to come and clean. And of course she still needs to earn. I know she's being scrupulously careful, as we are, and trust each other to be so. We have been keeping more than 2m from each other when she's here anyway, typically I'll call hello from upstairs when she arrives, she'll clean downstairs and then we'll switch, via one of going into a different room as the other uses the stairs.
My question is, if she (or I for that matter) were to contract Covid, would this count as a close contact and force the other to isolate? She'd have been in my house, but there wouldn't have been any contact whatsoever.
(I know this isn't specific to this week's news, but the news about increased transmission rates has got me thinking).