Transport for London (TfL) has put into operation the UK's largest hydrogen fuel cell that is contained within a building.

Based at the Palestra building in Southwark, TfL believes it will generate cleaner, low carbon power on site, creating energy savings which will reduce waste and save thousands of pounds on bills.

It is estimated that the fuel cell will be able to generate all of the power needed to run the building at off-peak times, decreasing to a quarter at times of peak energy use.

However, Phil Thornhill, national coordinator for the Campaign against Climate Change, denies that this will bring about the application of hydrogen fuel cells across the country.

"It is such a long-term thing, because it would require massive technological investment and a whole new set-up for green infrastructure," he said.

Mr Thornhill added that the immediate future for the fuel cells could lie in the creation of hydrogen-powered vehicles.