England is a strange combination of metric and imperial. Walking is measured in km but driving is miles. Weight of a person is stone and lbs, but of any other object is in kg and g. Height of a person is ft and inches, but of any object is in m, cm or mm. It's very odd
When my baby was born about a year ago here in UK I would always say his weight in kg when someone asked, and people would literally stare me blank in the face and say they have no idea if that's a lot or not. Once I converted it to pounds for them they were like "oh yeah, he's a big baby then".