Like most people I am not going abroad this year but have holidays booked in the UK.
It looks to me like when they lift restrictions case numbers will go through the roof. I am double jabbed but obviously could still get infected and have to isolate plus there will be more contact isolations.
I wouldn't normally bother with travel insurance for a UK holiday as my main reason for wanting it abroad is medical cover. It seems like the risk of cancellation is going to make it worthwhile.