Just go.
If anybody asks, you are a vulcanologist attending a symposium on advances in monitoring gaseous analogies from extinct or near extinct volcanos but your colleagues have been delayed because of all the trouble caused by Brexit, staff shortages at the airport, baggage handlers, the War in the Ukraine, the dreadful organisers who can't organise anything, and you have got dysentery from eating the local food.
I am sure they will leave you alone.