Got a pack of these myself, cracking price, great for Christmas lights obviously, and cheaper than the Amazon deal too! Excuse the blatant copy and paste, but I'm doing this in my phone!!
Remote Controlled Mains Sockets Set 3 Pack
• Converts electrical appliances to remote control on/off operation
• Turns appliances on and off at the click of a button
• Great for those hard to reach sockets
• Simple and easy to use - no installation required - 'Plug 'n' Play' operation
• Use to switch off appliances on standby
• Remotely control up to 3 separate mains powered devices
• 30m range in open spaces
• Even works through ceilings and walls!
• Maximum switching capacity 3120W