

The annoying thing about HS2 is that is was focused in the north. The link from Birmingham to London was somewhat tacked on to make of more politically palpable to those folk seeming allergic to spending any money outside of the south east. Now the project has been so messed up in its current state it’ll probably make transportation north of Birmingham worse than it currently is.
They’ve managed to install it on a bunch of trains in the Barcelona metro and it’s helped dropped the temperatures by around 1.5c.
I know Tfl has also put it on a couple of trains over the years but yeah we’re still lacking a broader rollout.