Stop all flights in in the UK while we are in lockdown

We are in Lockdown AGAIN! Can't see our family, can't send our children to school, can't go to a shop and can't go out unless for a few reasons. Yet people are still being allowed in and our country daily without checks. Just being asked to isolate, how many people are sticking to that isolation? We want the government to stop all flights into our country, close our boarders, until we are out of lockdown. Or we are fighting a loosing battle and its us the general public who are suffering