People-height is measured in feet and inches. Buildings and vehicles are measured in Metres.
Babies are weighed in pounds and ounces (as for why the goddamn mass of your sprog should be the first thing people enquire about, that's a rant for another time).
Adults are weighed in Stones. Just Stones, never Stones and Pounds (because that would be confusing). We tend to round up or down, or maybe use Half Stones.
If you're weighing something heavy, it might be a couple of Tons. Or is it Tonnes? They're pronounced the same so who the fuck knows!
Water and juice are sold in litres, but beer and milk comes in pints.
Our rulers are all in centimetres, but distance and speed are Miles and Miles per Hour.
Temperature is in Celcius, except in hot weather when meteorologists get to proudly announce that it's "100 degrees" - Fahrenheit, that is.
Welcome to Britain. We're fucking retarded.