This is actually a very cool project, and I wish them the best of luck with it...
http://www.messynessychic.com/2014/02/11/london-has-a-subterranean-veggi\ e-farm-in-an-abandoned-wwii-bunker/ <http://www.messynessychic.com/2014/02/11/london-has-a-subterranean-vegg\ ie-farm-in-an-abandoned-wwii-bunker/>