Also, there are certain free FAA-endorsed "WINGS" web-based courses that may be done in lieu of a BFR. I actually quite like having the hour with an instructor and try to do new and interesting things with it, but if you're stuck in the UK and it's a hassle to find a CFI you might want to make use of one of the WINGS courses.
https://www.faasafety.gov/WINGS/pppinfo/default.aspx