Firstly FIREBALL XL-5 found this deal originally, so all credit to him.
The PowerLine HomePlug AV Adapters 200Mbps allows your home to be completely networked using your existing plug sockets. Ideal for streaming high definition video content, audio streaming, gaming and Internet connectivity. Benefits
* Perfect for bandwidth hungry applications like HDTV streaming and gaming
* No power leads integrated plug enables you to connect straight into your plug socket
* Create a hassle free home network through your plug sockets with no need for additional wiring
* Alternative to wireless, no dead spots, no interference, no performance issues
Please note- You will need at least two of these to connect you device.
So it's 2 for £53.87 delivered or 3 delivered for £78.86