BTW, do you still say millibars in the UK? Hasn't it been hectopascals for some time. And why do you say millibars when giving QNH? Surely it's a lot different to giving it in inches to our recalcitrant american friends who know nothing of the metric system
Yup, we still say millibars. It is one of several 'opt outs' from the ICAO standards that we have. I don't know why, but then again I don't know why they changed to hectopascals in the first place. It was a change that achieved absolutely nothing as far as I can see.