Dingle, everyone seems to have covered it pretty well. It depends what you wanna do. If you contract yourself and sort all your own tax forms etc you can claim for pretty much anything. I have a list I can send you.

Actually no.. cos how over how many friggin years have I told you you should contract?! See... I AM ALWAYS RIGHT

But, if you can't be arsed with all that I have an accountants called RMS Consultancy. They pay you like a permie and do all the tax fiddles for you, so there won't ever be any comeback.