Thank you for the information. It is useful, but I am not sure about the withholding "extra". I will investigate that further with my company. My final query is, Isn't the first 10, 000 GBPs of a salary tax-free? Are the rules different for those working abroad? My salary is paid by BAe into my British bank account. Incidentally, I have been paying National Insurance since I started working for BAe in Feb this year.