Hi angelpie,
I decided I would like to try and quit smoking before I went to see the Surgeons at St Richards for my first appointment, as I thought I didn't want any reasons for them to say no I couldn't have the op. I went to my GP and was given Champix, a tablet taken twice a day for about 12 weeks, I smoked until the 12th day of taking them (which is recommended) then I had no urge to after that really and have not smoked since 1st May. I was a heavy 20+ a day smoker, an my husband who has smoked since a teenager also gave up with me, and has also managed to completely stop smoking, and I never thought I would see the day when he could/would give up smoking. The tablet seems to work really well, although it does need some willpower and it made us both feel sick for about 5-10 mins after taking the tablet, we've stopped taking the tablet now, only used it for about 6 weeks.
When I went to see Mr Adamo at St Richards, he did say about smoking, and said that very often they refuse to operate if people did not give up smoking. I think as people have said it helps with the anesthetic.
We are now saving over £350 per month! and hope we can both keep up the not smoking.
I'm not sure if you HAVE to give up, but from what I gathered they do like you to try.