Dom
 You need to register with Remit, 
www.remit.co.uk   And then find a dealer to take you on. Not sure on the age qualification tho.
 It aint easy, BMW have just started running tech courses too, so that could be an option and i would immagine the pay would be better, The pay aint great mate, you do it for the love of bikes not the wages.  Well my mechanic does cos i pay him ferk all.
 If you need any contacts at remit gimmie a shout
 Glyn