I would suggest your mate look at
http://www.airmech.co.uk.
This aircraft engineer site has loads of JAA and CAA licence info including training organisation location and information
I would also respectfully suggest he think really really long and hard about his future career. Aviation maintenance is a shrinking industry.
I believe aircraft generally have fewer faults per flying hour and require much less scheduled maintenance than years gone by. Advances in material science and reliability programs have had a 'positive' effect on the amount of maintenance an aircraft needs per flying hour.
At facilities around the country (and I assume the world) staffing level's have been reduced, with many facilities closing altogether over the last 10 years. Nothing I can see suggests this trend is likely to be reversed.
He may also like to consider that if he progresses well in his studies and gains the JAA qualifications and type rating's he seeks, he may well get 'promoted' to a position of management. This will of course result in him dealing principally with the inordinate amount of paperwork the job now generates, which would defeat the whole 'hands on' point wouldn't it?
Just some thought's from someone who already holds a licence and has been around a few years. I'm not suggesting he does not join the civilian 'wing' of the industry, I'm merely 'respectfully' suggesting some caution.
Regards
The Doc