Just back from lunch in Kingston upon Thames and manage to get myself a couple of E-on energy saving power down plugs.http://www.eonenergy.com/At-Home/Going-Green/Energy-Saving-Advice/Interactive-House/Resource-Centre/resource-centre-powerdown.htm
They are in Eden Street (at the back of M&S) today and will be in Waitrose, Twickenham tomorrow.
All you do is fill in a quick questionnaire and then you can choose either the plug or the bulbs.
Using a PowerDown will ensure that all your peripherals are turned off when you shut down your computer, this might include your modem, printer or anything else you plug into it.
Plug your computer lead into the main PowerDown socket and then plug any related peripherals into the side sockets. You can plug a flat multi socket adapter into the PowerDown if you have a lot of peripherals. Make sure none of the items are things you need to use when your computer is turned off.
When you switch off your PC, the PowerDown senses this and will automatically cut the power off from the rest of your devices. When you turn your PC on it will automatically power them all back on.
The annual saving by using a PowerDown is over £16*, so its payback period is under half a year. By using a PowerDown you will save 1.76kWh of electricity annually and reduce CO2 emissions by 0.75kg.
* Based on E.ON's standard electricity prices as of 18/09/07