Last time the SARF provided most of the SMEs and they spent a lot of time having to show that superficial claims of compliance and capability were exactly that.
Who will call the bidders' bluffs in the DfT?
Anyone except the team that chose the last SARH aircraft. The AW139 can't take two stretchers, can't take MIRG, hasn't got the range required in the contract, at the time didn't have an autohover system...