Thankfully I can't remember the last time anyone used pounds to mean weight in a conversation with me. Here's the current state of play in the UK based on my experience:
You still occasionally see people talk about their weight in stone, but many just use kilos now, anecdotally. For the weight of things you buy, it's grams & kilos.
Height is very much still imperial for most people, I don't think anyone would respond in centimetres if you asked their height
For long distances, if you drive, you speak in miles, if you don't you might be more likely to talk in kilometers. Short distances are all in meters pretty much, maybe feet and yards if you're a pensioner. Speed is mph
Volume is nearly always litres, with the exception of beer in a glass, which is always pints (or fractions of). Milk bottles are still imperial sized, but funnily I more often hear people say "big milk" & "small milk" rather than pints.
Baby's birthweights still seem to be mainly in pounds, but it's very difficult to know what it means given that nothing else is typically measured in pounds. Someone will say about their baby "they were 8 pounds" and you'll say, "oh, very good" and neither of you will think of pounds again.
You still occasionally see people talk about their weight in stone, but many just use kilos now, anecdotally.
In my experience, if you're looking to lose a bit of flab for the summer, you'd say you want to lose six pound to half a stone (which is 7lb) or whatever, but if you go the gym regularly and keep an extremely keen eye on your weight, or if you like to think you do, you use kilos. As a rule, you'd use imperial for eyeballing or for measuring things with a bit of play, but you'd use metric if you need precision.
Milk bottles are still imperial sized, but funnily I more often hear people say "big milk" '& "small milk" rather than pints.
It's actually a real mix. Actually look at the milk you buy, some shops will do half litre, litre etc bottles some will do pint, 2 pint bottles. I'm pretty sure they'll be priced the same. Clever little bit of shrinkflation where 0.5 litres is 68ml smaller.
It was actually pretty great when I worked for a company making things here in england:
"That needs to move 50cm" meant it had to move exactly 500mm
"That needs to move a foot" meant just kick it over about a foot
It was just an unspoken thing that metric meant precise and imperial was just caveman measuring
Curious about something for years. Especially before metricization, when y'all bought things in shops, did it ever get confusing if someone was talking about weight or price? Like it's a pound a pound or a pound per half pound. "Give me a pound's worth" of ham. You 100 pence worth when you wanted 16 ounces. Not explaining myself well because it's 5am, but I hope you get what I mean. Lol
You never stop eating every single second you eat you eat so much that you don't even have enough time to go to the bathroom and you eat the most calorie dense foods