Repatriation Flights
The fact these are still continuing to arrive in the UK shows how long this is going to take. Once all repatriation flights are over there will of necessity have to be a few weeks with no travel to other countries until those other countries agree to receiving passengers from the UK. Evidently BA have some idea of how many weeks/months this will go on otherwise they wouldn't have gone to the trouble of sending so many aircraft into storage - many outside of this country.
I have the feeling Germany, Portugal and other countries have handled the pandemic better than the UK as seen in the fewer number of infections and deaths. Today a group of 20 or so workers could be seen (I understand) disembarking from minibuses to work in fields - no social distancing whatever. Don't know where they were from but such situations show the UK government is not handling the crisis in a robust enough way. The outcome is that the effects are likely to stay with us longer and "normal" life and travel will not return as quickly as it might have done..