Presently - 12 bases so 12 duty a/c.
Future - ? bases and locations but still 12 duty a/c to cover same areas in same time constraints.
66 military personnel to be provided to sucessful bidder ie 16 crews so that SAR expertise does not degrade in frontline ops.
It is up to the bidder how he deploys those military personnel around the UK and how he uses the crews ie mil crews / civvi crews or mixed.
Where those mil guys come from and at what stage of their career is up to the mil, after all they are still paying for the service.
Now go argue some more
(ex mil SAR/ QHI/ NVGI/ now enjoying the greener grass):