Louis - the other point about the funding is that the MoD only pick up the cost of a flight (MoD converted to civ) once the conversion has finished and so won't pick up the full 70% until 2016 or so - if that isn't making the funding stream more complicated I don't know what is. It is also one of the reasons MoD seems to like this process because it theoretically gives more money in the early years to spend on more Chinooks/body armour etc etc.
SARREMF - yes, its a shame that none of those people involved wanted to listen to any criticism of their Master Plan but they just massaged the data to give the results they wanted.