The UK is a big island - do you have any broad idea where to go, and when?
You'll usually find he lower prices in Scotland, take Aberfoyle 30 mls north of Glasgow as an example for 15 / 20 quid.
To confuse you more, look at this site:
www.uk-golfguide.com
They show all the UK golf courses with comments and maps and links to the club homepages.
And look at the past threads on golf in the UK - plenty of hints!