Still partially in use the UK. We’ve got a really messed up system where metric is used for some things and imperial for others.
We tend to cook in metric but weigh ourselves in imperial (but stone and pounds not just stone)
Distance is metric for DIY and metric for driving.
Liquids are metric for most things and imperial for milk and beer.
It wouldn’t make it easier to arrange meetings because you’d have no clue if you were arranging the meeting for when people would be at work, have finished for the day, or fast asleep at night.