You probably saw this coming – but did you expect it to be so soon?
Some places are so special that even the most adventurous travellers can't help but revisit.
There's been a "boom" in visitors from Spain, Italy and Greece, one UK business leader has said.
Travel and environmental experts break down the rise of this movement and how to incorporate it into your next holiday.
Visit Cornwall wants holidaymakers not to visit unless they have pre-booked their holidays and to test themselves before, during and after their time in the region.
There is also a £200 fixed penalty notice for failing to fill in a travel declaration form.
All holidaymakers will have to have had two doses of the jab, but no mention of whether or not unvaccinated children will be allowed to travel.
Passengers arriving by boat, train or plane will have to take a test up to 72 hours before leaving the country of departure.