Mayor of London Sadiq Khan is looking for students with ideas for green business projects.

He has launched a new edition of the Entrepreneurs Competition in which entrants will use their creativity to pitch projects that face London’s green challenges, from tackling pollution and boosting air quality to lowering the city’s carbon footprint.

The winning project will receive £20,000 in start-up funding from Citi Foundation.

Some of the winning projects from previous years include Bio-bean, which turns London’s coffee waste into advanced biofuels for use in heating and transport and Aeropowder, which turns waste feathers into a range of new materials like building insulation.

Mr Khan said: “From cleaning up our filthy air to boosting recycling and cutting food waste, our student entrepreneurs could help solve some of the serious challenges our city faces.

“London is the best place in the world to launch and grow a business and a leading centre for green technology. With our many world-leading universities in the capital, I’m sure this competition will generate some truly innovative solutions to help boost London’s environment.”