The situation in the UK has to be seen to be believed. Actually, come to think of it, I live here and I sometimes can't believe how shambolic things are.
In schools children have only been taught metric and not imperial measurements for decades.
In supermarkets all packaging is metric (but some goods seem to be sold in very odd quantities that only make sense when you realise that it was a round number in imperial).
We buy our petrol (gas) in litres. But all our road signs and speed limits are all in miles. Ever tried working out how many miles to the litre your car gets?
People tend to quote their heights and weight in imperial measurements. I think that I'm probably the only one that doesn't!
Weather forcasts give the temperatures in celius but 99% of the time the presenter will also say what that is in farenheit (sp.)
Needless to say, going to a hardware store can be an adventure!
Britain is stuck in a strange limbo somewhere between metric and imperial and what's worse is that it's been stuck there for decades and there's still no sign of any progress. The whole conversion process was started but not finished which makes things a bit of a joke.