Firstly, you might want to post this during UK time for better responses. I went in the other direction so don't have a great deal of help I can offer, other t

Firstly, you might want to post this during UK time for better responses. I went in the other direction so don't have a great deal of help I can offer, other than asking if you've considered working for a company with dual presence and transferring to their UK office after working in the US for a while? I know of several people who've done this. The other Americans I knew working in the UK all got jobs there after attending university there.