Have a look at this website, the NHS currently has a big campaign on about giving up smoking.
http://www.givingupsmoking.co.uk/
Contact your local GP as well as they will have specially trained smoking cessation counsellors there.
Ask yourself though "Do I REALLY want to give up smoking?", because if you don't then you are only kidding yourself by attending these clincs, getting nicotine patches etc etc.....