I've long argued for hydrogen.
Many of us are old enough to remember the arrival of "New High Speed Gas" from the North Sea, replacing "old" town gas. What seems to be conveniently forgotton is that town gas contained from 10% to 40% hydrogen, along with hydrocarbons and carbon monoxide. The exact structure depended on the design of the gasworks and the source of the coal.
If the gas distribution system of the day could cope with town gas it can cope with a blend of 25% hydrogen mixed with natural gas, reducing CO2 produced by space heating by 25% virtually overnight. Most modern gas boilers will require only a change of the burner jets. This should be the first priority.
EVs are fine for local "shopping trollies" but as Peter G argues, hydrogen powered fuel cells would be better.
And remember, any engine that can be modified to run on LPG can be converted to run on hydrogen.
We just need to get the politicians and Civil Servanys out of the decision chains, as things stand they are scientifically clueless.
Or worse.
