surely a ten bob is a 50p piece. Where can you get a round for that? please tell me, I want to visit.
Even on the continent, they use equivalents to Imperial measurements. In France for example, they have the 'livre' (or pound), although it means 500g. Imperial measurements were based on commonly used quantities, rather than arbitrarily set physical constants.
Oh, and as for rounding up if/when the Euro comes in, I lived in Spain when the converted, and after the Peseta finally became obsolete, things went up dramatically.
Some things that used to cost 100ptas went up to 1 Euro - An increase of 67% !!!