I don't mean to be critical, but if you need to be persuaded to do something (i.e. move to England), best not do it. Put another way, don't come to Britain expecting it to be the USA. Not come expecting people to be the same. We share a language but the UK is a different culture and things are different from the USA.
Then again, if you do come to Britain, you might discover that the USA is not Nirvana. That people can and do lead great lives elsewhere. I've lived in many countries during my life thanks to my job, and you make them what they are. But in all seriousness, when you come leave America behind. Sure, be proud to be American and you can certainly retain your likes and preferences. But if you spend all your time comparing America and Britain you will make yourself miserable.
I hear Americans complaining about the lack of peanut butter, and VAT, and no sockets in the bathroom (a big gripe on this board). SO WHAT! Get over it and get used to it.
Do what your heart tells you to do and you will be happy.