I don't know if this is true... so wondering if anyone knows, but I was told by a couple of (intelligent) people, that there are several fleets of trains, costing millions, that have to be destroyed, because they don't meet EU regulations, although they would have been perfectly fine if we had left by now.
And also, that HS2 is actually part of a Europe network, that wants to put transport across our country. Apparently, its proper number is E (Europe) something... but also is only being done still because we are still in the EU?