Mike,
You are showing your age sir!
We used to have 240 volt but that lot acroos the channel got jealous because they only had 220, so Brusels knicked 10 of ours and gave them to the French, Germans etc., leaving us with just 230volts
Personally I think we should have sold them to the Yanks, 'cos the poor old ex-colonials over there only have 110 and their need is greater.
John.