Don’t know if this is any help to you, but I requested a second opinion from the guy who seems to be the No.1 prostate cancer oncologist at the Royal Marsden, (and possibly in Europe), on the NHS and the appointment came through within two or three weeks.
We can’t mention his name here, but a Google search should find him. He’ll probably tell you what you already know, unfortunately.
Best of luck.
Cheers, John.