Oh man, spent a week arguing over this, in the end I won
Basically I took them my forms from the RAF IOT Selection centre saying I passed the aptitude tests for Pilot, (Failed Eyesight for that though) WSO/ Fighter Controller etc and they let me off the security.
This was a bit of a gamble as though they seem to realise that recruitment is a little slack for the aviation industry, they dont seem to realise that currently its nonexistent for the RAF.
Has its good and bad sides though, luckily if I went back to my current job and lived like a monk I could repay the loan on time. So not as bad as it could be.