Emilia Jayne hunts for cuttlefish in the world's busiest shipping lane. Cargo ships have right of way here, but lucrative cuttlefish swim in these grounds too. Margaret of Ladram is Brixham's most successful trawler. This week, skipper Adam Cowan Dickie is gambling, he's leaving his home waters of the English Channel behind and steaming 20 hours to the Bristol Channel.