I will also add to the above the extension of GER electrification to Norwich, started in the late '80s and will try to ignore the Beeching decimation that, though initiated by Macmillan, was almost entirely carried out by Wilson's Minister of Transport, the T&GWU (a mainly road transport union) sponsored Barbara Castle.

Going back earlier, the Great Northern Suburban Electrification was given the go-ahead by the Tory Heath Government in August 1971.

Tories anti-railway? Or yet another Left Wing myth people choose to believe?