I wouldn’t worry too much about it. I was diagnosed in November and only had surgery in the following June, when I had found the right surgeon.
He charges twenty grand in his private clinic, but operated on me for ‘free’ on the NHS. You will be on a NHS fast track now anyway. The standard stay for my surgeon is one overnight, but I stayed a second because of a long drive home.
You say you have ‘high risk’ cancer. Did they give you a Gleason score: G- X+Y=Z, or a staging figure of 1-4? If you are Gleason 9 or 10 that is high risk, and the advice above to take the hormone Bicalutamide to buy some time is wise.
Even if you have a high grade cancer, they are usually slow growing, so I suspect your sense of urgency to splash out £20,000 is misplaced.
Give us more details of your diagnosis, and others here will pitch in.
Best of luck.
Cheers, John.