sense1,
ER, I think you've rather missed the point, what they are talking about IS buying more JSF, so that is an addirional 22 alongside, or part of, the original JSF buy. It would then be a buy to support the original 4 squadrons to replace the Harrier and these two to replace GR4, plus an additional 6 for the OCU.
It was the overall reduction in squadrons that took me by surprise.
Oh, and it's not me talking utter bolleaux, it's Group Captain Strategic Plans from HQ STC.