*Ahem*, post #10. I did the research, all you had to do was read it! Even in the 1960s we'd been slipping towards the American usage and it was getting confusing. In 1974 Wilson confirmed that, as far as government statistics were concerned, we would be using the America measurement from now...
Indeed. As we have with car engine sizes. Even the most patriotic of us, when asked what size our car engine is, will reply "Two litre" for example. Nobody would ever dream of saying "Three and a half pint"
OT - Another bit of standardization, sorry standardisation was that apparently in printing 'Font' is an American term, the British term was 'Fount'.
Only got my Mum's word for that, so don't put it down as a Mastermind answer or anything,.
You are correct, I remember when a 'billion' was a million million. The US used the 1,000 million definition and to make things more understandable we adopted theirs. (And a million million became a trillion - also the US definition). Usual howls of outrage about the decline of British imperial...