I heard about a search for King John’s baggage train and treasure 2-3 years ago. There was a British TV show about it and some divers scouring the bottom of the river in search of the ford and evidence of the baggage train & treasure. I thought it was a Time Team episode, but I did not find a show title that covered the topic. The show’s conclusion was that the treasure is probably in the swampy, or once swampy area near the ford, downstream from the Sutton Bridge. Perhaps someone else knows the title of the show I saw.