Sure can and it's easy to do! You just find out the address of your tax office from your pay-slip and write a letter, listing all that you have paid in subscriptions over the past 6 years (7, if you include the current one). This actually includes all professional subscriptions so if, for example, you subscribe to a professional organisation like NATE (Nat Ass for Teachers of English), you can claim that back too. You need to go back through bank statements and check the precise amounts you have paid. You do not have to send in evidence, though you need to be prepared to do so if HMRC ask you. If PE teachers are claiming for laundering kit, etc, it's important that receipts are kept, just in case. You can only claim for the percentage difference (e.g. the extra amount of laundry, washing powder etc you use as a consequence of being a PE teacher) and not for all your laundry. However, they can claim whenever, for example, they have to buy new trainers BUT keep the receipt somewhere safe in case HMRC ask! 'Allowable fraction' is misleading and may make people think they have to do some calculation before notifying the tax office. They don't. Just list the amount of the subscription and the tax office will calculate what is 'allowable'. One or both of two things will happen as a consequence: HMRC will send a nice fat cheque; they will adjust your tax code to ensure you don't pay too much tax from now on. In the future, they may start to send an Income Tax self-assessment form which essentially covers the same information you will have put in a letter. They are not difficult to fill in.