A certain CSC on 'D' Watch told me during tea break one day that he had just been 'pulled' by the WM for daring to take off his jacket to reveal he was wearing, wait for it, a SHORT SLEEVED shirt! He was wearing a tie too.
He was subsequently posted to Boscombe as SATCO where he made headlines in the staff newspaper by parachuting out of an Andover over Studland Bay (NB: This was a 'standard' part of the MOD[PE] Air Observer Course which all Boscombe controllers could do if they wanted to) leading to him being posted again.