Good, sounds like the perfect solution. Cost effective, uncomplicated and achieves exactly what you need with relatively little effort. Job done. As they say, the simplest solutions are always the best. If it was me I'd run a round 13 amp cable thru the the wall and fit a double wall socket and back plate (less than £4 on eBay). One it would hide the hole and Two you've then got another 13amp socket available for other things even if it's just the Hoover.
Edited by deleted (Fri 27-Feb-15 18:22:01)