Limpopo, several of the CHC transition team have just left RAF/RNSAR to work civvy and there are also some on the S92 course in July. Many of the rearcrew who are working/will work for CHC are very recently ex-mil.
I am in no way knocking the civilian SAR pilots abilities - expertees in flying is certainly not confined to the military but there are only so many experienced SAR pilots around and, once you have accounted for them, where will you get the rest. If the future capability is to include NVG ops, where will you get the expertees and experience from if not from the military.
In 2012, if all 6 RAF flights and Gannet become civilianised you will need to find 56 SAR pilots and 56 SAR rearcrew - all with the requisite experience - where do you think you will magic them from if not from the MoD?