The rules/info that made up these booklets i.e. 'Your Pension Scheme Explained' were sourced primarily from JSP764. It would, seemingly, take a legal (there's that word again) challenge to establish whether the RPI index-linking reference (entitlement?) is indeed a preserved right against those who were in the AFPS for the time RPI was referred to (maybe RPI is still referred to in the JSP) - any budding lawyers out there?
Was there not a recent ruling about this in favour of certain private sector pension schemes?
S4G