While we are on the Tax topic, any of your friendly folk able to advise me on the following?

I am looking at a job offer and if all goes well in the next couple of months, I will be living in Qatar as a British expat soon. To reduce any Tax implications in the UK I want to know if anyone of the current British expatriates know of a good accounting firm or have good tips on what to do / Not do.

Many thanks in advance for all your help.
H