The JAA have had helicopter specific questions in their question bank for quite some time. It's each state's aviation authority which is producing the exams. The UK CAA have awaited to introduce helicopter specific exams due to "the JAA haven't introduced official documents governing helicopter exams".
I got a brochure from Dragon Helicopters with information about their "real" CPL(H) course in conjunction with Bristol GS. Give Dragon a call, they should know when the UK CAA will introduce CPL(H) specific exams.