It is Gold Street Surgery's policy not to convert private prescriptions to NHS prescriptions. Private prescriptions are medication which your private Doctor or Consultant has recommended for you on a private prescription. A private prescription is not written on an official NHS prescription and so is not paid for by the NHS. The cost of a private prescription must be met wholly by the patient and is dictated by the cost of the medicine plus the pharmacist's charge for supplying it. A prescription is a legal document for which the doctor who has issued and signed it is responsible. Responsibility is not transferable. Therefore a NHS doctor cannot simply convert a private prescription to an NHS prescription. A doctor you see privately can’t issue an NHS prescription.
Similarly, hospital prescriptions should be dispensed by the hospital, NOT brought to the surgery.