Heh, Joans has already left the building and will be gone for the next 24hrs... I don't know if he's leaving me to see what happens.
On a serious note though, thanks for the help guys, I'm not worried about the integrity of the wiring, if I was I'd already have been on the phone to a sparky no messing.
I don't think we need to worry about being able to use the pull cord light switch too much, it's over the end of the bed, so not easy to get to without stretching and we have the original pull cord from the cieling too. I wouldn't want to put a blanking plate on the wall or I wouldn't be able to put the light on as I went into the room!
Cheers again, will report in tomorrow so you know I haven't been burnt to a crisp overnight.