ExGrunt
It is quite simple - you do not allocate a Pilot straight out of the OCU to fly HM the Queen whilst using the Units experienced Pilots to deliver the rations to a forward operating base. A bit OTT perhaps - but the principle is the same.
Equally, why use both your experienced Pilots on a routine in theatre resupply sortie and delegate the VIP task to an RN Pilot with extremely limited experience on the Chinook whose other Flt Deck crew member was an RAF Navigator.
I have no intention in trying to denigrate Lt K or his Navigator - but the simple fact is that Lt K did not have sufficient experience on the Chinook to be even considered as suitable for a VIP task. The role of the detatchment was support for the Army - it is that role for which Lt K should have been programmed.