I decided to chase my referral to a diabetologist today, as I'd heard nothing. When I phoned through,I was initially told that a letter of referral had not been done as my notes were flagged "may" be referred. I could not believe my ears and I made it clear that with suspected neuropathy, I felt it important I see a specialist. I think the receptionist sussed I was about to blow my top when she told me to wait a minute. She came back and said "oh, a letter has been drafted." I asked for my password for the new "choose and book" system we have in this area and was told she could not give it to me.(A lie, as they have instant access to that info at the surgery).
Sounds to me that you may have unknowingly moved to Croydon as this is so similar to my experience in trying to get referred, but like you I persevered and by I think being a pain in the a**e to them I got referred and to be fair to the specialists at the hospital they have restored some of my lost faith in the NHS.
Regards
Pete