I find this 'debate' odd, because it is no debate at all. Just a selection of of RAF SH mates actually driving the very inter-service rivalry they claim does not exist.
Note please how few of us dark blue types have entered the 'debate' or even tried to take the opportunity to point out the foibles of the various proposals laid bare here.
The policy remains thus for FF2020 and has not changed since SDSR:
Puma2 continues
CH4/5/6 continues
Mer3 goes to CHF
Additional CH buy continues
SAR goes civvy
The only reason P2 was up for debate was some interesting cost deltas against the originally quoted and budgeted price.
It would be nice if the RAF actually followed policy rather than ranged against it.