You may not need to. For example, medical prescriptions are free in Northern Ireland, Scotland and Wales. They are also free for people in England who meet certain criteria, including people who are:
If you aren’t entitled to free prescriptions for your medicines you will usually be able to save quite alot of money by buying a Prescription Prepayment Certificate (PPC).
We have described how to get a NHS certificate for free prescriptions. We hope it has been helpful