@ Anonymous Coward
"What's wrong with 500ml - half a litre ?"
Whats wrong with 568ml - a pint? We use it already we all know what it is and we have the infrastructure for it (barrel sizes, measuring equipment, drinking vessels) so why bother changing? It's been decreed that we don't have to change our traditional measures just to fit in with our continental neighbours (who, I imagine, mostly couldn't give a toss anyway) so we migth as well keep the stuff we all know.
So a few tourists are confused - once they see a pint and realise its much the same as a half litre at home, and most poeple can easily do that visually, there's no bother. As for distances and weights, so what? They'll be here for a week or two then they'll bugger off home again so it's no great hardship. Indeed, in many cases it's part of the charm of visiting this country because it's different to what they have at home. If you want uniformity everywhere then I feel sorry for you because you're probably the sort of person who thought it would be a wizard idea that every Holiday Inn on the planet should be laid out the same, decorated the same, feel the same, serve the saem food in the same weay int he same dining room as all the others. Let me assure you, it most certainly is not; it's depressing and homgeneous and dull, dull, dull!
Vive la difference!
Mines the one with the full pint of best in the pocket.