I am currently paying my Student Loan. Do I need to let Simplify know?

If you send us a P45 that will tell us, but if you fill out a P46 you should tick the Student Loan box on the form. The Student Loan Company will pick up that you now work for us when we pay you for the first time, and even if you haven’t let us know, we will receive instructions to deduct the loan very soon after we have paid you for the first time!