List,
Every so often Lidls have something useful in their special offers.
From Monday 17th, they are stocking a set of 4, wireless controlled mains sockets, one of which is a lamp dimmer and a transmittter- for just £9.99 the lot!
http://newsletter.lidl.co.uk/c/r?EMID=09500E306TUVT841843HM00FNKSISThese work on the European standard 433MHz band and have a useful range indoors of about 10m.
I bought a couple of sets 2 years ago and they have been very useful for turning off appliances at the socket - without having to scrabble behind furniture etc.
They are also useful for controlling my thermostatic radiator valves by remotely turning on a small heating resistor element next to the control valve bulb, when you want the radiator to turn off.
Ken