Well, I would be most interested, but instead I will point out that it's 220 Volts on the continent. Or 230, actually, as the UK and Europe decided to converge on that, rather than having 220 and 240.

Still, a contintal plug can be plugged in either way, at 230 volts or so...

Since 1995 the voltage in the UK has changed to 230v -6%/+10% (as altis said). From http://www.tlc-direct.co.uk/Book/1.1.htm

"For many years the supply voltage for single-phase supplies in the UK has been 240V +/- 6%, giving a possible spread of voltage from 226V to 254 V. For three-phase supplies the voltage was 415 V +/- 6%, the spread being from 390 V to 440V. Most continental voltage levels have been 220/380V.

In 1988 an agreement was reached that voltage levels across Europe should be unified at 230V single phase and 400V three-phase with effect from January 1st, 1995. In both cases the tolerance levels have become -6% to +10%, giving a single-phase voltage spread of 216 V to 253 V, with three-phase values between 376V and 440 V. It is proposed that on January 1st, 2003 the tolerance levels will be widened to +/- 10%."
I believe this information is also in the latest IEE Wiring Regulations.

Also altis didn't say that the neutral wire had a smaller resistance than the 'phase' wire, he just said that it had a small resistance when compared to the local earth since it is earthed at the substation.