I'm owed quite a lot of money in tax that shouldn't have been paid. I know there is at least £60 from my summer job last year (i earned less than £1000 the whole year) and i know there'll also be some where i have had interest on savings taxed in the past 2 years but i don't know how much that is. What do i do to claim it back? If it's a form do i have to do a different one for every tax year? Also, i don't have a p45 or p60 so can i still get it back? xx