Not sure if this is the correct forum. If not will someone please move to correct location. I am an 80 year old retired British expat who has lived in Thailand for the past 22 years. I have an ongoing dispute with HMRC and would welcome advice on an inexpensive UK-based tax advisor who can help me obtain a long-standing tax refund.

Many thanks in advance for your advice and assistance

I have used, and recommend, Cambridge Tax Practice.  They specialise to a degree in expat tax matters.   A director, Kieran O'Conner has been very helpful.