Nikon D3000 for £339
Well this peach of an entry level digital SLR keeps on getting cheaper. It's now just £339 from Amazon with the 18-55mm VR lens which seems to be the cheapest price on the internet for the camera and lens kit.
Don't forget to buy a UV filter such as this Hoya 52mm Haze UV to protect the lens from dust and finger prints along with one of two helpful books to help you get started such as Nikon D3000 Digital Field Guide or Nikon D3000 for Dummies.
Nikon D3000 for £369
If you're in the market for an entry level digital SLR then you can't go far wrong with the Nikon D3000 Digital SLR Camera (18-55 mm VR Lens Kit)
If you don't know much about VR or 'Vibration Reduction' then there is more info from Nikon here but it basically means that the lens counters camera shake - always a useful feature to have.