ginnie said:swelec, you've got it in one. That's exactly what happens. I did wonder whether I ought simply to replace the whole thing, but when I went into B&Q the choice was so wide that I chickened out and just bought a new cord. Basically, should I buy a 'one way' or 'two way' new switch, and what's the difference?
Glad to be of help to you. Thought after reading the thread that all the talk of cable numbers and colours was leading you down the garden path