I tested + on 30th Dec and again on 31st so ordered a pcr to be delivered. It arrived yesterday, I returned it yesterday and I received the text result + today. I've just put the code they gave to me into the app but it's giving me 10 days isolation from yesterday and not 30th. When I ordered the pcr I had to say what day I started to have symptoms so I thought my record would have picked that up. I'm sure that's what happened with my DH when he tested + in August. I'm not isolating for 10 days from yesterday but Friday. In reality I'd not left the house since last Tuesday anyway.