Hi,
I want to install an outdoor weatherproof socket, do I have to wire it all the way from the consumer unit or can I take it from an existing indoor socket? I have an indoor one exactly in the position I want the outside one (only the thickness of a wall between the two), what's the best and safest way to do it? It's only going to be for low-voltage lights and laptop charger, nothing too heavy. I've got a few bits lying around in the shed like a circuit-breaker-socket and weatherproof boxes, the cable will only need to go straight through the wall (about 12 inches) so it's not going to need burying or anything complicated. Unfortunately my consumer unit is miles away from the back garden.
I'm not sure if I need a qualified sparks to come and install/sign it off. What would be a reasonable cost if I had to get a pro to do it?