My wife is a US citizen with a house outside Los Angeles. I am a UK citizen resident in the Cayman Islands. We are both currently stranded in London and wish to travel together to California.

The latest US proclamation states that the spouse of a US citizen can enter the US, but, if we've been in the UK prior to travel, we'll need to self-isolate for two weeks on arrival. Fine.

But I do not have a visa and normally travel on an ESTA which was recently granted. The problem is that many have reported that their ESTAs are being terminated before travel if they intend to start their journey in the UK. My question: how do I stop my ESTA automatically being cancelled? I have our marriage certificate from eight years ago, but would like to have some "permission" sorted out before the day of travel, rather than having to present my documentation to a check-in agent.

The DHS states that the responsibility is with the airline. Has anyone else been in a similar position, please?