Right, think of an important historical date. Have you thought of one? Was it 1066, the date of the Battle of Hastings which kicked off the Norman conquest? I thought it might be. The fact that this date is so burnt into our minds shows that somehow we believe that this country changed overnight at that time. From being some Anglo-Saxon Celtic place to being sort of French. But what impact did the Norman invasion actually have? Did everything change just like that? Time Team's dug loads of sites from that period and now, we've put the best of them together to see if we can answer those questions.