Have you thought about contacting the likes of Bristow, Bond or CHC up in Aberdeen ? I'm pretty sure they have been running apprenticeships for the last couple of years and plan to run some more. I think that the guys come out at the end of it with an EASA part 66 "A" Licence and then are put forward for respective B1/B2, all the while gaining experience on their respective line/base maintenance operations on medium/heavy helicopters.
Regards NST