The question is, whats stopping the RAF/MOD procuring a squadron of new build or refurbished Mi-17's for use in Afghanistan?
Probably the same reason that stopped us taking advantage of some cheap Blackhawks a while back. Who's going to fly them and maintain them. Our guys are busy flying and maintaining Pumas/Chinooks/Merlins etc etc. How long and, how much, would it take to man these new Hip Squadrons?