The dies already cast for what happens in ten years
Puma will be replaced by AW149 - manned by the Army
Any remaining green Lynx and other light helicopters will be replaced by a stretched AW609. Eventually these will replace Wildcat as well - and some will be fitted for AEW work
Green Merlins will have been condemned by then and V-22 will be on order to replace them, and also the oldest Chinooks