I live in an island country
It appears that between the delta variant being identified in India and our PM finally putting India on the 'Red' list, 20,000 people travelled from the UK to the country and back. Apparently they were allowed to go to funerals, but most lied and just went to see family for a holiday, so seeding the highly transmissible version right across Britain. Now our release from restrictions has been delayed and we once again have the highest infection rate in Europe.
It beats me how a government that has got vaccination so right still manages to screw up every other aspect of controlling this virus.