The paper is pretty clear on the new Medium Lift Helicopter, it will replace the 4 obsolete types APART from Merlin and Chinook, so I read that as Puma, Gazelle and Army Wildcat, not sure what the 4th type could be, Dauphin? Therefore Benson sounds safe.
No mention of the Islander/Defender fleet though?
Nor of the replacement types for the BAe 146.