Joe, if creative writing is what you're after and want a jump start, have a look at the Arvon Foundation, and Ty Newydd which is the Welsh equivalent, though they don't do other crafts:
http://www.arvonfoundation.org/
http://www.tynewydd.org/
And have you looked at the Short Courses at West Dean? I notice that the CW one says specifically that writers of all levels are welcomed:
http://www.westdean.org.uk/site/arts/index.htm
You could also have a look at Missenden Abbey. Most of the year it's a conference centre, but it has very good weekend and summer schools, organised by the county council, I think:
http://www.adultlearningbcc.ac.uk/brochures.asp?sc=032005
Emma