The UK’s first hydrogen fuel cell buses have gone into service in central London for a two-year trial that also involves nine other European cities, making it the largest project of its type in the world.   DaimlerChrysler developed and manufactured the Citaro buses and BP is managing the project and providing the hydrogen-refuelling facilities.  In London, three of the No 25’s are being trialled on the 11-mile from Ilford to Oxford Circus from January 14th.  Each bus has a range of 125 miles between each refuelling.