Lewis Pugh has been described as a modern-day hero for completing a 330-mile swim along the English Channel.His feat of physical endurance, also had a higher purpose -- to highlight the threat to the oceans from climate change.

VOICED: Lewis Pugh has been described as a modern-day hero for completing a 330-mile swim along the English Channel. His feat of physical endurance, also had a higher purpose -- to highlight the threat to the oceans from climate change, over fishing and plastic pollution. It's 49 days since he set out from Land's End Today, he completed the final leg from Dungeness, before finally touching the harbour wall at Dover. Our Science Correspondent Thomas Moore has been with him every stroke of the way. Contains Interviews with (in order of appearence) Lewis Pugh Endurance Swimmer and Oceans campaigner, Antoinette Pugh Wife, Michale Gove MP, Enviroment Secretary. on August 29, 2018 in Dover, England.