Not being a Brit I may have this wrong but based on my reading DEF STAN are simply standards on which to base procedures or a contract and are not mandated by anything other than policy.
It seems some malcontents on this thread are treating superseded policy as 'mandatory' to suit their argument.
However, what certain contributors here have failed to recognize is that the MAA has actually put 05-123 into their regulatory set as regulations in the 5xxx sequence.
Of course perhaps the paranoid will dismiss that because they see the entire RAF leadership as a secret mafia that meets in the bowels of the Royal Aerospace Society to plot new ways to sacrifice service personnel as part of their ongoing vendetta against the self appointed consciences of military aviation!
This explains the transfer:
http://www.maa.mod.uk/linkedfiles/re...omparators.xls
It is perhaps significant that the critics of the British MOD do not actually cite actual clauses in the DEF STAN that are not complied with (and in fact only even refer the DEF STAN by number when pressed) but just make vague references to actions this disagree with being in contravention.