Don't count your chickens.
Farage is a populist and will have pulled Labour/Brexit voters and otherwise non-voting chavs, racists and general malcontents to his cause, not just Tories. Many Tories just stayed at home. Reform went from zero to a heck of a lot of votes in a matter of weeks.
If Starmer keeps to the centre, Farage and the Tories might split the right. But if after a year or two, Labour activists challenge Starmer and replace him with Kahn, using Boris's route into power, Labour will move to the left. That would lose them votes and inspire the right. Then Farage can take control of the whole of the right, the way his idol Trump took control of the Republican party. By then, Labour will be an unpopular sitting regime, and they could be taken down by a populist. The UK's PMs could be Starmer, then Kahn and then Farage.
There is very little talent in British politics, particularly in managing and rolling out viable policy, which makes it unstable (and butchers the economy, standard of living, quality of life).
I doubt there will be any investment in Hydrogen, green or otherwise. The Germans are the crash test dummies for that, and it is proving to be insanely expensive. Switching UK gas infrastructure to hydrogen is, ironically, a pipe dream, as everyone would have to go without it for the transition. The expensive and intrusive stuff that requires labour (not available post-Brexit) like heat pumps, just isn't going to happen either. The green transition will be switched to whatever is cheap and do-able, so expect a switch to green electricity to heat homes.
Also note the almost complete absence of mentioning Brexit by the BBC. Brexit lies got the Tories into power. The real world consequences of Brexit erased them. Is there a D-notice on mentioning any downside to Brexit in UK media, or are they self-censoring?