DfT need to put pressure on the contractor to take a large proportion of those mil crews that want to come across in the locations they are currently based. That way you get local knowledge and lots of experience and ability.
I guess there is little doubt that the winning contractor will wish to reduce risk by recruiting a number of current mil SAR crews.
I wonder however whether the contractor, with his shiny new toys, would prefer to place a captain with lots of type experience and perhaps previous SAR or mil experience over a transferred mil SAR captain with lots of local experience but limited if any experience on a modern glass cockpit aircraft?
I guess one solution could have type experienced captains crewed with ex mil SAR experienced co's. not sure whether crab and his colleagues would stomach being crewed that way though....