Fergus Nicoll travels to the port of Workington in the north west of England, where he hears from port manager Sven Richards about how small regional ports can make global haulage more sustainable. Blue Line Logistics run a fleet of low emission barges in Belgium and the Netherlands and have plans to expand to the UK and the US. Fergus speaks to the company's founder, Antoon van Coillie. The BBC's Adrienne Murray has been looking into the research and development going into producing 'green fuel' in Copenhagen. Fergus also hears from Yon Sletten, who is developing the Yara Birkeland, a zero emission, autonomous, electric freighter, currently undergoing final sea tests off the coast of Norway. Also in the programme, the efforts of Green Marine, a group of ship owners, ports and shipyards in North America, that has come together to raise the bar for environmental standards in their industry, as their executive David Bolduc explains.

Producer: Russell Newlove.

(Picture: aerial view of a container ship surrounded by green sea. Credit: Getty Images.)