You've probably seen this but there's an episode of time team in Basildon where they are searching for a roman villa which it turns out was mostly destroyed by a railway running next to the site but they find a mortuary enclosure in a field next to a bend in the Thames and there was a previous excavation the other side where lots of neolithic activity was found, won't be anything to see at all but they found loads of flints and I suppose in places where theres been that much development and lack of care for the past all you can hope for is to be in the place which was sacred at the time and understand why it was there.... before a megabowl is built on it!
Here's the episode