Without specific details I cannot give advice on your individual cases, but would point out that you do not lose liability to UK tax simply by moving abroad. If you move now for example, you could still be liable for UK income tax for the remainder of this tax year. You have to consider the date you move, how long you will be away and whether you have completed the right paperwork.
I have covered these issues in number of other threads, so you may like to do search. (Note also, that I advise on these issues professionally.)
For moving small amounts (by which I mean below GBP 10K) you might as well do online transfers from your UAE to UK bank account, or try Western Union.