We have booked a cottage in Gloucestershire for first week in August. Attractions, shops and restaurants will be open by then. I trust the owner to have cleaned the place as legally required, and it will be a great break, with DS, DiL and DGS joining us for a few days.
Then I got braver and booked a villa on SW France for last week in August. Yes, it will be the awful Ryanair, but we will wear masks and clean tray tables etc before sitting down, I have always done that anyway. I don't see that as any greater risk than a supermarket or hairdressers.
Advice was to book flights this weekend, as with the release of quarantine, the prices due to skyrocket on Monday!