In October last year I was told that, if I went on the waiting list at St Georges rather than at St Peters (Chertsey), the waiting time was 6-9 months and that the whole journey was 18 months to 2 years with most people waiting nearer the 2 year mark.
Also, as they take people from a wide range of PCT's, it depends on the criteria set by your PCT not necessarily St Georges as to whether you qualify for surgery.
Tatiana