Have you tried any of the company's at GLA to see if they'd take you on as a trainee or mechanic. I know Loganair have a hangar there and I saw another company (Highland Airways?) advertising for engineers. Maybe worth a try getting in touch with them and seeing what they say about it. Maybe try get some more experience out of BA if possible, unfortunately they're still not recruiting (In fact lucky I've still got a job!)
Failing that, try getting into one of the General Aviation engineering places at one of the local airfields until you've done your Licence theory. Only problem there is that if it's under 5700kgs you can't count it towards JAR but it would still look good on your CV if you went for a mechanics job.
Hope this helps you, if there's anything else gimme a shout and I'll see what I can find out for you.