Heh Chilli, I've still got the Queen's one, too. However having left her employ 17 years ago it no longer fits, maybe I should e-mail one of her Supply colleagues and ask for a new one!
I do wear gloves and a bone dome (well a David Clarke shell) at all times, too because...
Some years ago, an acquaintance of mine dead sticked a biplane onto a golf course. Hit the only tree on the whole course during the roll out and died from a fractured skull. The instrument panel is full of sharp protrusions, keys, altimeter subscale knob, alternate static valve, cockpit coaming, etc, etc.
Vowed then to protect myself more!
I find that the helmet provides a betetr seal for the headset ear pieces and makes for a quieter flight, too. And yes, it being my only headset I wear the helmet in spam cans, too. Just as many sharp sticky out things in them.
sNr