SFFP,
Your earlier comment, "...It has been badly handled and badly thought through. There are plenty of folk like me who are close enough to retirement to seriously consider early retirement if offered but it's not even an option....", simply shows that you don't appreciate/understand what is going on.
You are already effectively a part of the redundancy scheme, even though you aren't being paid to go early.
The aim of the SDSR draw down (right or wrong) is to reach a certain target number of people (30,000+ ish - whatever it is) in the RAF by Apr 2015. To reach this figure it is looking at both "natural wastage" and redundancies. Natural wastage represents those who will leave anyway, or not be signed on for further service, by 2015. They will simply not be replaced in terms of recruitment.
You are part of the natural wastage. Therefore you have already been taken into account in the number crunching exercise. If you got some form of early retirement, i.e. redundancy, it wouldn't save anyone else from having to go!!!