That's not so true in the UK, here is a map of electrification from 2010 [0]. The only major difference is the Great Western Mainline (from London to Wales) is

That's not so true in the UK, here is a map of electrification from 2010 [0]. The only major difference is the Great Western Mainline (from London to Wales) is now electrified as far as Cardiff. A lot of passenger trains are still powered by diesel, and for freight trains I believe diesel is used in even higher proportions. [0] https://ichef.bbci.co.uk/news/410/media/images/46102000/gif/_46102937_uk_electric_rail_226map.gif https://ichef.bbci.co.uk/news/410/media/images/46102000/gif/...