I've just returned home from my 6-week post-RT follow-up with my oncologist. He said he's very pleased with the way that things are going, and my current PSA (4.6) is absolutely fine given my treatment history, so everything's going to carry on the way it is now as far as medication goes, with another PSA test and follow-up appointment in 6 months' time. He did say that he may consider stopping HT after 18 months rather than carrying on for two years, as originally planned.
Thus far I've had all my treatment and appointments privately, but, as mentioned previously in this thread, I've decided to retire on 1st Aug, at which point I'll lose my private medical insurance. My oncologist is therefore transferring me onto his NHS list, which he says will make no difference at all to my treatment.
So all in all, a good result. Trying to put PSA levels, etc, out of my mind for the next six months at least!