I'm Spartacus! I had spent 17yrs in southern africa before coming to London and walking into an AFCO - 3/4 months of security checks and I was in.
Damian, when ready, get yourself to the UK and take it from there. Regulations are for the guidance of fools - British citizenship requirement aside, market forces, and the calibre of the person applying, will dictate whether or not an individual is successful in joining the RAF.
A great career, good luck.
S4G