Im 15 and really want a saturday job i live in stoke and have no clue how to get one any ideas?

Legally you cannot get a job, even a saturday job until you have your national insurance number and you get that when you are 16 so don't waste your time trying as no company will take you on as it is a large court fine if the company is caught. delivering newspapers or babysitting is the only legal thing you can do.