There are other oddities, particularly where GSM 62 pattern (mostly NI) is concerned vis a vis other campaign medals, Falklands, Gulf various etc. Have seen SWOs going hairless insisting they should all be in the same order.
Also remember MANY years ago an aged Regt officer who had an old style GSM (equal green purple green stripes) which he wore IN FRONT OF his WW 2 medals - cue apoplectic SWO. Until he pointed out the GSM was from Palestine in 1937! (I did say many years ago .........!)