For those interested: we use an Olympus SP-500UZ digital camera with Pine Tree Computing's Camera Controller to take the photos and upload them to the website automatically. The webcam is located at 50.57°N, 3.94°W (SX 628770) facing approximately North, 369 metres (1,210 feet) above sea level.
Thanks to Dartcom for the webcam feed - http://www.dartcom.co.uk/dartcam/