With that amount of time in the Forces why not go straight for an MSc using your ELCs to fund most of the tuition and let your budget holder pay your T&RE.. City Uni in London does a great set of 3 MSc courses in Air Transport Mgt, Air Maint Mgt and Air Safety Mgt. Your Mil service will qualify you to do the MSc without the schoolboy BSc.
It'll take some effort but well worth it
Agree with rej.
I finished my MSc in 2010 after less than 2 years (whilst deploying every 6 months). I have never been short of work, and neither have my fellow students.