An FMed296 form is a standard military prescription issued to a member of the Armed Forces instead of an FP10 when they're on base.
When this is provided to a specified Ministry of Defence (MoD) contracted high street pharmacy, an invoice for services is sent directly to the MoD for payment. The patient does not pay for the prescription.
If the patient gets their medication on the FMed296 from a non-MoD contracted high street pharmacy, they must pay the full cost for each item. The patient can recover any costs through their military unit. The MoD and military medical centres will not honour invoices raised directly by a non-contracted pharmacy without prior approval.