wg13 your analogy of why BLUH became BRH is not quite on the money. The AAC justification for a LUH was deemed unnecessary (as that is the bread and butter of another force seemingly)and therefore in order to allow the joint venture with the RN (whom remember could not afford the platform by themselves and that is a key point here) to continue a much better requirement had to be found. Since therefore the Gazelle and its role were en route to Boscombe Down services the RH role was quickly assigned to Future Lynx.