DP is travelling (back) in the UK with our primary aged kids. DP is vaccinated (and has had covid). The children have most likely had asymptomatic covid as the rest of the house had it. DP has been contacted today by track and trace. he's currently between hotels (and travelling in a private vehicle all day to get to the next one). Tomorrow is the event for which he returned to the UK. does he need to self isolate until his PCR test is back? He can't go to his next hotel if so as it's only got one night availability. Is he legally required to do a PCR test, or is it a recommendation? He's been doing LFTs regularly as he's been seeing aged relatives, and we've lost a relative to covid already. Please help!