It was about 11 months from the first ever therapist appt. for me. I'm at Exeter, which is supposedly one of the ones with shorter wait times because it has less patients.
The procedure I experienced was 3 sessions with a therapist and about 3 phone call sessions from the same therapist, a consultation with a senior doctor at the GIC after those to be signed on T and a letter for it was sent to my GP who from then on prescribes a permanent repeating prescription of T for me at my local surgery. After that I was assigned a different supervising doctor at the GIC for 3 sessions to talk about the next stage of the process (i.e. surgery)