If you have been recently diagnosed with Birdshot you may not realise immediately that you should apply for a pre-payment certificate for your prescriptions. It will save you money in the long run. The current cost is £104.00 for a 12-month PPC. You don’t have to pay for it in one go, I pay a monthly £8.70 for mine, by direct debit.
If prescription charges go up, you are covered for the rest of the year so you will not be affected immediately by price increases.
This link takes you to the NHS website to the page which has all the information about how to obtain the card.