Surveillance System and Home Automation in Europe
If it is available in the UK, I would go with Z-wave technology.  While I have only dealt in the US, I hope this can help.  I've sold quite a bit of Z-wave and been trained in installation it's similar to installing regular devices like switches and dimmers.  Programming is simple with the remote, and I hear the computer interface makes it easier.



In the US there are many companies that make it, with most of them being able to be used with other Z-wave devices.  The system is considered a mesh system, meaning it goes device to device and the more devices you have connected, the better the signal travels.

By having many companies using the Z-wave technology then you can get basic dimmers, receptacles and switches to security systems, air conditioner controls, shade control &amp; irrigation.

This link has both US and UK product links you can check out.  I've mostly dealt in Leviton, Cooper Wiring Devices and Intermatic as my sources but there are lot more plus the Audio Video and Mechanical companies.

The programming is done through the remote control or by computer if you buy the interface.  No wheels or dip switches to set.  A system can be conservative or lucrative, your choice.  The pricing used to be about double that of X10, but if you had to trouble shoot X-10, then the price difference is worth it.

If you are a techie (not Trekky) you'll find lots of information on the WWW.  Many forums to go through to help answer questions.