Do flight deck an cabin crews have to isolate...?

[Streetwalker]

No , they are on the  exempt list .  Which is quite a list by the way which includes diplomats and their families , defence personnel , contractors working on border security , Crown servants , people who live abroad but work in the UK , International bus drivers  ,lorry driver , eurostar staff  ect , ect .

In fact just about anyone that is not traveling for leisure .

[patman post]

And how do they operate if one of a plane's crew tests positive — do they all test and isolate and withdraw the aircraft from service while it's deep cleaned...?