solar panels for electricity uk

It has solar panels on British households had an important effect on their electricity bills?
I saw this in an ad beyond curries, install solar panels on their homes? but really in a very rainy and cloudy Britain, no one has saved a lot of money on electricity in a year by installing the £ 3000 solar panels, http://www.currys.co.uk/solarpower/index.html
I looked through the link you provided. I'm not from the UK, but I read where they have charged so much fuel that is cheaper to go renewable. As the weather is cloudy and rainy. You have to add wind energy to the mix. When there is no sun there is usually wind. So you have to have a bit of both. Furthermore, if the network is connected can use the network as a backup battery speak. The same thing will happen here in the U.S. very soon. The cost of fuel is so high that it will be cheaper to go solar.