Retractioning and alternative fuels projects and experiments

[Journeyman]

Right, I'm trying to build up a list of all the recent alternative propulsion systems experiments and projects in the UK. I think I've got most of them, but I'm sure others might have slipped through the net.

I'll exclude bi-modes as they're now well-established, and the basic principle was proven by the Class 73s years ago. On top of that, I think we have...

• VivaRail D-Train - diesel, battery and hybrid versions
• Artemis DVT conversion, trialled at Bo'ness
• Parry People Mover probably counts.
• Battery Electrostar trial
• Class 769 project
• Alstom Breeze hydrogen project (class 321 conversion)
• HST power car battery project a few years ago? Don't know much about that one.
• Forthcoming Stadler FLIRT tri-modes for TfW
• Merseyrail and Tyne and Wear Metro replacement trains - am I right in thinking at least some of them are trialling battery technology?

Off the top of my head, that seems to be the main ones. Any I've missed?