Nhs appointment system

I had the same problem with an appointment at the eye hospital. After five months waiting I got a letter telling me as I hadn't contacted them they were referring me back to the GP. I phoned them and they arranged the appointment.

I very much suspected that they were clearing the decks with so many people waiting for appointments and only those that phoned back got appointments. The others went back through their GP I suspect.

You could phone the appointments line and explain your circumstances.

I was waiting for an angiogram, and would have missed the letter because I was on holiday and wouldn't have seen the it in time.
Fortunately my landline and mobile numbers are on the NHS system and I received a phone call in the middle of Ostia Antica checking I was attending my appointment.