Tourist - I think Frontline Merlin mk1 and Jungle Ops are nearly all single pilot now. The RN does not have anything else other than a single pilot requirement. (SAR is only twin pilot based on the RTS requirement)
Why the RAF have insisted on the Griffin is beyond me, when the RN and AAC go from what was a mildly longer 705 course to a multi engined aircraft.(unless they have less capable pilots? - I doubt that)
The tri service training has never ever been equal in the helo world!