'Tim and I had underestimated the danger involved in going out to sea. We had no radio, compass, life raft or flares. In other words, we were a couple of idiots.' This is the story of Shane and Timothy Spall and their Dutch barge The Princess Matilda. After a summer on the Thames they head out to sea with only a road atlas and a vast amount of ignorance - and it is absolutely terrifying! As Tim and Shane explore the coast from the Medway to Cornwall, eventually they start to wonder, could they make it out of England altogether? Could Matilda make it to ... Wales.