I always assumed that the UK was in the middle because of GMT but then I'm very Eurocentric myself. So, is Europe in the West or the East then?
Moreover, in the case of volumetric measures, not only do you have a real problem, but an easier solution: most of the containers that hold liquids are disposable anyways, and constantly manufactured (i.e. food). All that would need to be done is to make containers that are metric-sized, and printed with metric labels, rather than Imperial.
FWIW, this became a legal requirement in the UK 20+(?) years ago when we joined the EU and we have just about assimilated metric measures of volume and weight when it comes to consumables.
Also noteworthy, the building industry also works in metric these days, although there are many builders who still think in ft/in a lot of the materials are sold in metric sizes, i.e the width of a standard sheet of plaster board (sheet rock) dictates how you space your studs.
However, street signs are still in MPH and most people still measure their body weight in Stones and their height in Feet and Inches.
It takes a while but the ability to trade with neighbouring countries makes it worth it...
I agree, and furthermore it bugs me that this is one of the few places where rape jokes are still apparently socially acceptable.
I don't think he was joking.
Beware of the Turing Tar-pit in which everything is possible but nothing of interest is easy.