On Fri, 29 Apr 2005 05:24:28 UTC, Dave Stanton wrote:

The neutral wire in the UK is connected to ground only at the sub station
under normal situations and nowhere else. Therefore it can be at a
different potential to true ground.

I agre with your comment about him not knowing much about UK mains. But
in a PME (TN-C-S) situation, neutral and earth are connected together
much closer than that - at the cutout (incoming cable connection).
--
Bob Eager