thats a slightly disingenuous argument The four squadrons of the GR9 fleet were split over two bases with no other co-located assets - except while at sea or on Ops. The whole of the SHAR fleet was in one location (except when at sea) on a base which had numerous other units co-located
From what I can remember, 800 and 801 could and did deploy to sea for extended periods with a total of around 18 aircraft (more in the early days) leaving the rest shorebased with 899. They only started with 34 airframes (though there was a later attrition batch) so their deployable fleet was around 50%. And of course in a push they could - and did - deploy the whole lot except for the ones retained at Boscombe. Obviously they were helped by having the four Blue Fox Hunters
It still seems to me that the way the GR9 fleet was oorganised would make the arrangements seem very bad value for money in comparison to the Treasury