Have you written to your MP quoting CCG's that are prescribing and asking why yours is providing second rate health care when compared with others? The MP should write to your CCG's 'accountable officer' Quoting the Regional medicines optimisation committee (Northern) position on the product.
You can also complain to the CCG thru their patient liaison team although they 'can' take 6 months to respond. It's also possible to request a slot at one of their meetings to speak as a member of the public.
Keep pushing, keep pestering, troll them on Twitter, find others local to you and get them to do the same, and keep up the skeer....