Glasgow College of Nautical Studies will be the establishment you are thinking of, and offers a JAA ATPL theory course.
The course is run by ex BAe instructors from Prestwick who didn't move to Jerez with the school.
The link you require is:
http://www.glasgow-nautical.ac.uk/Co...es/jaaatpl.htm
From what I've heard, it is an excellent course - think it costs about £2500 from memory.
Hope this helps
Mach 1