"Lurch" wrote
| Actually, what I meant was if it were a two way switch with a twin
| coming from the light fitting it wouldn't matter which way round
| the live and switch wire went into the two terminals that they were
| required to go into, (L1 and L2, or similar).

Buuuut ...

If you've got a live and a switch live at the switch, and you put one into
L1 and one into L2, the light will never come one because a two-way switch
never shorts L1-L2. Does it?

Owain