then isolate for no reason for not having covid. that's the thinking behind that. in terms of the travel testing, these things were reintroduced in an attempt to slow down the arrival of the omicron variant into the uk from abroad. once it is very prevalent in the uk and equally prevalent abroad, you don't need that any more. there is some economic rationale as well, because the travel companies, the ski companies and the airports and airlines were saying it was adding so much money to people's holidays the people were not working. and people were so worried that their predeparture people were so worried that their predepa rtu re test two people were so worried that their predeparture test two days before they came home, if that was positive, you got stranded abroad for a week or ten days whatever it was, adding even more costs and uncertainty to your trip. so those are the big bits of thinking and these two quite big changes. there have been lots of changes to the testing regime over the last two years, maybe there will be more. explained, because every detail, thank you very much indeed, adam! ——