Hoping that someone can help us work this out so no rules are broken. Dd is a University fresher living in a self catered flat in University halls. There are 7 of them living in the flat. 1st flatmate started with symptons on Monday and was tested the same day and got a positive result on Tuesday. All 7 isolated from Monday but on Tuesday, 5 of the other 6 developed symptoms and have since tested positive. Everyone seems to have a different take on when they have to isolate until. It feels like one of those horrible maths exam questions but they want to make sure that they're doing the right thing.