Last month we told you about two enterprising LSE graduates Kirsty Kenney and Harold Cranston, who had received a £5,000 grant to develop their idea to turn the mostly redundant (but never-the-less iconic) red telephone boxes in to solar powered charging units for mobile devices.

We’re delighted that after much hard work and support, Solarbox (as the company is called) unveiled their first quite literally green telephone box in London last week, able to charge up to 100 mobile phones per day. You can find it on the corner of Tottenham Court Road and Oxford Street in central London.

No doubt, there’ll be more green phone boxes popping up across the capital in the not too distant future, so if you see one and need to charge your phone, why not give it a try.