I did say apparently, but i did get the from a pretty good source.
The way i see it is the ones apparently in storage are awaiting rework up to in-theatre spec, then they will be passed to the Navy, the last one's to go will be the the one's actually in theatre, no rework required but deep servicing will be!!!
Thus the RN get their Merlins in phases,as they are replaced by Chinooks, otherwise if everything was flying it would be a hell of a task to to do all the Merlin in one go.