TNT is to more than double the number of its zero-emission lorries in London.

It comes after an 18-month trial period, working alongside Gnewt Cargo. A fleet of 15 specially-built electric vehicles will be introduced in the spring, carrying out over 1,000 international deliveries into the capital.

The announcement follows the news that Boris Johnson has planned to make the city the world's first ultra low emission zone (ULEZ) by 2020, meaning all vehicles that operate during working hours must produce little or no harmful fumes. 

Managing director of TNT Express UK and Ireland, Alistair Cochrane, advised that the company is actively seeking ways to reduce its carbon footprint. He added: "This partnership with Gnewt Cargo is just one example of the many schemes currently being trialled by TNT Express in major cities right across Europe."

Electric vehicles are expected to play an important role in achieving ULEZ status, as they save an estimated 316kg of carbon for every 1,000 litres of fuel used.