Sailor-turned documentary maker Des Cox owns one of the world's biggest maritime archives: a celebration of the golden years of British shipping.
When he was handed reels of film from the 1920s - film that was about to be thrown away - he expected it to come to nothing. Not least because the film was in an extremely fragile state.
Then - as he inspected the frames - he saw an image that looked familiar. It looked like The Titanic. A lot like The Titanic. It led to the most important discovery of his career. John Ryall went to meet him at his home in Saltdean near Brighton.
More top news
Philippa has the latest weather for the east
Philippa has the latest weather for the west
Porchlight says major long-term government investment is needed to reverse an escalating crisis on the streets of the South East.