When Britain joined the EEC the standards for voltages were changed. Previously the continent had run on 220volts and the UK on 240volts with fairly tight tolerances. The voltages were changed so that the whole EU ran on 230volts with broader tolerances which happened to cover from the lowest permitted 220volts to the highest 240volt tolerances.
Some countries actually wrote their local legislation to be 220volts minus a small tolerance plus a large one to comply with the EEC rules but to stop the local population complaining about EEC interference in local matters.
Don't you just love European harmony?
How long before the generators are tweaked to 230volts to provide us with less power but for the same unit charge?
A Britishness question on radio 4 this morning:
If somone offers you a snake bite do you...
a) report them to the RSPCA
b) dial 999 or the alternative number that you know from the above question
c) drink it, have four more and wreck the local town
Doesn't it make you proud to be British?