Hiya
It sounds like you may have been refered to Charing Cross GIC with waiting times like the ones you describe.
Under NHS guidelines you should be seen within 3 months of being refered but CHX is currently swamped as Dr's in the south seem to only know about CHX, this has resulted in CHX's waiting times being as much as 68 weeks.
Here's a bit of good news, under the new guidelines you have the right to request to be seen by the clinic of your choice. As a result of this I requested to be tranferred to The Laurels in Exeter & my treatment has definately speeded up compared to going nowhere with CHX for almost 3yrs.
Even if you have to increase your travel distance then it would be worth investigating what other clinics are within your reach, then all you have to do is tell your GP you wish to be transfered