If you do not like to give or receive kisses then we can’t be friends. Sorry. Here in the UK and Europe in general, this is a standard way to greet someone. Cheek kissing is acceptable between parents and children, family members (though not often two adult males), couples, two female friends or a male friend and a female friend. Cheek kissing between two men who are not a couple is unusual but socially acceptable if both men are happy to take part. Cheek kissing is associated with the middle and upper classes, as they are more influenced by French culture. This behaviour was traditionally seen as a French practice.
When I met my English boyfriend (who is now my English husband), we greeted each other in this way. As you do. BUT there was a HUGE problem. That bloke was the doppleganger of Pierce Brosnon and I thought that all of my Christmases had come at once. I immediately asked Green Tara to quickly come to my rescue. Given the circumstances, she did the best she could. I survived, and it ended pretty well. So, don’t be squeamish when you are next in London Town, because this is how we are gonna greet you.