When I started my airline job I was told I can claim £850 tax reductions because I was a uniformed pilot. stuff for dry cleaning, headsets etc etc etc, mentioned it to some of the other instructors I used to work with, not sure if they followed it up, but it was a case of phoning up the local tax office, saying I was a uniformed pilot working for such and such company, and the tax code was changed there and then, simple! Good luck
CJH.