The British have a stupid mix of Imperial and metric. We usually measure distance in meters/centimeters but feet and inches are still used fairly regularly especially if you're measuring the height of a person. Large distances are usually measured in miles unless you're going for a run in which case you probably use km. Then you go for a drive and measure your speed in miles per hour, and your fuel efficiency in miles per gallon. Except you now need to fill up so you go to the petrol station where the prices are listed in pence per litre. Most other liquids are also measured in litres unless you're buying milk or beer.

Then if you're weighing things you probably use metric, unless you're weighing a person or you're an old person cooking. Temperature is also measured in celcius unless you're old.