You need - or rather your mate needs - a minimum of 2000 hrs military time before you/he can take advantage of the military accreditation scheme. Confirm the hours are fixed-wing?
2 options:
1. Stay until you/he meets the military accreditation criteria (2000 hrs TT, 1500 as P1 of which 1000 as P1C etc) See LASORS. Then do the FJ bridging package at Bristol.
2. Take the ATPL exams (all 14) and work towards a CPL. Then add the IR.
Don't forget that the idea of the miltary accreditation scheme was as to be a recruiting and retention incentive.....