All of this is part of a large program by the UK to switch to hydrogen: https://www.gov.uk/government/publications/uk-hydrogen-strat...
What you're doing is just concern trolling, and suggesting that just because a program won't instantly get to zero emissions it is somehow not real. Meanwhile, electric cars are still being charged up mostly by fossil fuels, a fact that cannot change on the large scale without green hydrogen. Somehow, this fact is never brought up in every anti-hydrogen attack.
A gas turbine can get you up to 60% efficiency BTW. While fuel cells are arguably the better idea in the long run, it is not a huge problem to use gas turbines for now.