ER, so if RAF catering has been contractorised, how come there is still a RAF Catering Training Squadron, and that the current RAF careers web page is advertising careers as both Chefs and Caterers (Stewards as were) as being immediately available?
I haven't seen a service steward or chef for a number of years now, but that's not to say there aren't some around. However, I suspect the Catering trade is not a general Catering trade as you would think, but is ticking over at an absolute minimum to provide trained individuals who can deploy on ops, do the field sqn stuff and work on the AT side of the house. After all, the chances of finding anyone in ISS or other similar contractors who would be willing to 'cam up' and work out of a tent at all sorts of random hours without attracting an overtime bill that looks more like a phone number.
So there might be the very odd mess that is still wholly RAF Catering, my instinct says in one of the two Gp stations yet to move across to PAYD for whatever operational reasons they managed to get through, with the odd smattering of almost digital posts around the wider RAF outside of the specialised areas I mentioned previously.