The funny thing is that theoretically hydrogen would be easy to deploy in the UK. We already have a gas network for methane, it wouldn't be hard to mix in 20% hydrogen and then filter it back out at the other end (there's an energy cost, but it's not huge, and in any case most existing uses would not have a problem with 20% hydrogen). Which would give us the ability to deliver hydrogen relatively cheaply to any location. But it looks like EVs have too much momentum, and are likely to have a cheaper running cost anyway.