In my case and our "party" accommodation has had a deposit carried over from previous years ~ as I tried to point out we want to have the annual holiday in Whitby ~but if UK Govt says there is a restriction on travel the this is not possible

I therefore say the contract for holiday bookings is frustrated ~ so in our case we would go if permitted by raising the travel ban, or if not permitted rebook for the following year

This will in time need to be properly agreed as the norm for holiday booking ~ regardless of where and why!

No one should lose their deposit!!

Ray