The figures I have are not recent and also not of the same time but are interesting anyway.
In 1988 the then Air Sec announced that the junior officer aircrew cadre would reduce to 1000 seats. He included sqn ldrs.
In 1992 redundancy the JO Eng pool was 841 and the sqn ldr pool was 843.
In 1996 the JO Supplier pool was 337. Int O was 134.