Pink,
Although I'm not in the UK, I am a woman who's had a radical cystectomy and received a neobladder in it's place. You don't mention why you're having this surgery (and you don't have to), but I imagine it can't be for cancer because no one should wait four plus years for this surgery if that were the diagnosis. When I had my surgery they did also do a hysterectomy, and I know the reason it's done is because of the possible spread of BC to these organs. So again if you don't have bladder cancer it's possible you may not have a hysterectomy. Another factor for or against the removal of those organs could be a woman's age, and I don't remember if you ever mentioned previously what your age is (although you don't have to tell us that either).
Except for incontinence the first couple months (which was the worst of it) and a little longer a lesser degree of incontinence, I'd say I have a fairly normal life. I must say I'm amazed how well it all works.
I'd be glad to answer any other questions you might have regarding your upcoming surgery. I'd probably be drinking lots of hot tea if I were in your situation (the waiting), but I'm sure it will all work out well once you have the surgery. Best of luck.
Lou