But what I described donkey were is transmission risk?
Re flights not having an impact.
Before anyone jumps down my throat re why we can't stop all flights, ferries the tunnel etc.
Let's say we had immediately done that, except for returning citizens, checked for covid at entry points, only trade in and lorry drivers checked.
How would the UK have got covid?
Maybe a few carriers slip in but I can't see as an island how it would have come here?
It come via people mixing elsewhere in the world and coming home?