You need someone still in the MOD who can check their systems ;-)
Breaking the law as they go...
On topic, I'm with Jimlad. If a CS Grade 7 needs to call themselves 'Colonel', they have enough problems to be going on with. Should a 'real' retired Colonel try to get Mrs Golf to call him Colonel (him, women are more secure in their skins) he'd be sorry! As for Sgt Golf (Retd), he's hoping for some fooling around with a G7 'Colonel' later!
CG