BRC - almost certainly, although previous may be taken into consideration! I did the ROIT centuries ago and we had an ex WO Rock returning as an Oggy officer and he had to run around with the rest of us. But he knew all the short cuts too
Medic - give the aeromed folks a call, they should put you in the right direction. Google RAF Reserves and take it from there. What are you closest to, Linton or Leeming?