What happens with local lockdown and visitors?

[hayfeverhellish]

I live in Devon and a few of us have been wondering this...if a local lockdown has to happen in Devon for example where there will be a lot of visitors / tourists, will they all get locked down within the county in their holiday homes / campsites (which they may not be able to afford etc) or will they be told to go home (and potentially take the virus with them?)

Knowing Boris Johnson they will be allowed to travel home.

If it was a Welsh or Scottish location they would be locked in like they have done in most of the rest of the world.