WSO was a shadow of it's former self though, even if we allow for the Tornado and MRA4 fleets that are no longer/never were. Gone are the days when all but the sole front-line-single-seat-ego-day-tripper had WSOs, it had become a legacy post. And really, does/did the MRA4 really need WSOffs? Could it not have more than capably operated with WSOps?
Even in the best case [hereafter known as the 'Pre-SDSR plan'] had the GR4 as leaving service in 2020 when the FOAS came into being - the WSO's days were numbered either way.
This is a completely different point, but I don't see why we need officers flying at all. How much money, if any, would it save if all Pilots were NCOs? Could have an 'NCA (P)' and 'NCA (C)' [Crewperson].