Craigie,
Also Bond may be willing to talk to you, they have taken mature apprentices from various skilled back grounds in the days before the merger with CHC.
Lots of the old Bond Engineering management are now at Bond Offshore in Aberdeen, shouldn't be hard to get in touch, alternatively their sister company Bond Air Services has a couple of operations in Scotland with aging workforces.
You can contact them on 01452 856007, they could probably give you the number for the offshore boys as well.
Good luck.