I work in a number of zero hours jobs. In 23/24 I did not work very much and did not meet my personal allowance yet was taxed each month as though I would. I am therefore owed some tax back. In previous years when this has happened I have simply received a cheque at some point so never actually had to do anything to receive this. That was always because I didn't know I would get any back and it was a small amount less than £100. This time I believe I am owed around £600. I want to know if there is anything I can do to claim this back quicker than just waiting for hmrc to figure it out.