Hi Eddie
In my own experience, pre-existing conditions are not covered by traditional private health cover such as BUPA, Prudential etc.
Westfield Health and other cashback plans operate differently and don't have that restriction. However they are not the same type of cover.
As I understand your position:
Private Health if you take it out now would not cover any treatment privately
A cash health plan would allow consultation fees and some other tests to be refunded. There is generally a 3 month waiting list. You pay and then claim back a percentage or whole amount depending on the cover you have. I would research a few online and then decide.
So your choices are:
Take out cash plan and wait the required time (3 months).
Go via traditional NHS
Pay for private consultation and then revert to NHS.
If you go for option 3, do some research first about best urologist and hospital. Phone to check fees for paying yourself and check the consultant works in NHS and where he practices, so you could continue there.
Then go to your GP, discuss referral to urologist. If you are not happy with the NHS or GP options, say you would like to pay privately because you are so concerned about the situation.
Ask the GP to write a letter to the Consultant (you already have the name and hospital).
Then you make appointment with consultant and you will have the letter organised.
Be aware that the consultant may wish to carry out scans/tests which will cost privately. He/she may not be able to give full opinion without them, so be clear on the costs with him and what you can pay yourself. Very often, if they realise you are frustrated enough to pay privately, they will do what they can to help on NHS.
Also remember, that scans etc are charged by those departments and not him/her so be sure to clarify what you may have to decide.
Long answer eddie, but I hope it helps.
Fx