I think life line connectivity such as to/from the Channel islands will be/stay strong especially if EZY and BA do not restart their services from LGW to JER.
As for connections to UK airports, Belfast and say Dublin ?
MAN and EDI there should be a need, and maybe one with BHD or BFS
For international ? It is too soon to say what Countries we can visit in the short term, and who may come along to take those on such as Paris and AMS.
Likewise with Spanish border regulations -
TUI has it's weekly May-Oct charter series Majorca holiday program (Palma, Volotea) but frankly I think holidays to Spain and its islands for summer 2020 will not come back in the short term.
Small series like this one I think may get canned.
That's my Tuppence and that is not even taking into account as to whether any form of social distancing needed will be profitable or possible, in small airliners...