Richard Snell wrote:
Hello all,
snip
He found that there was no voltage at the switch ( about 3V ) but
managed to get a reading of 246V at the light fixture in the lving
room. He got about 150V in the hall !!!

We both thought you should either get 0V or 240V !!

Digital meters can often measure the small capacitive currents induced
by wires lying next to each other.
This is not a 'real' voltage, if there is any load, it will fall to zero.