This footage was filmed and produced 5 October 2023.

The Prince of Wales has hailed “amazing” eco-friendly start-up technology businesses in London.

William was shown building material made from food waste during a visit to Sustainable Ventures, a working space which helps fund and support green firms, on Thursday afternoon.

He remarked: “It’s amazing, and shows if we put our minds to something what we can discover.”

William met businesses such as ENSO, which has created a more efficient electric vehicle tyre reducing harmful particles worn off during travel.

ENSO was among the finalists of this year’s Earthshot Prize, established by William to find solutions to “repair” the planet.

Founder Gunnlaugur Erlendsson said, after showing the prince a taxi which had the tyres, that the recognition has helped the business.

William was also shown thermal imaging used to detect heat loss from buildings anywhere on Earth by firm SatVu.

He later joined a discussion with start-ups to hear how Sustainable Ventures is helping them to expand.

Among them was AirEx, which created the world’s first smart air brick to reduce home energy bills, and Depop, an online platform which allows users to buy and sell vintage and second-hand clothing.