I was faced with this issue last year, I was given a couple of contacts in the U.K. one ignored my message the other a guy a FAA cfi in Scotland offered to do my flight review if I flew up to Glasgow to do it with him. I accepted but despite further messages asking when I could go and see him they went unanswered. So in the end I arranged a weeks break and made a trip over to Florida and did my flight review there. Expensive excerise but I was getting no where here..