ydrogen fuel cell trains will run on British railways from 2022. Alstom and UK rolling stock operating company (ROSCO) Eversholt Rail Group have unveiled the design for a new hydrogen fuel cell train for the UK market. The fuel cell trains – nicknamed ‘Breeze’ – will bring zero-emission hydrogen tech to parts of the UK which still run on diesel. A hydrogen fuel cell works by converting hydrogen into electricity, which can then be used to run an electric motor. The 'emission' from this process is pure, drinkable water, making it a non-polluting power source.