While a little orthogonal to this, Tom Scott's latest video [1] with him climbing a power transmission tower concludes with discussion as to how the generating sources have gradually been moving from the centre of the country, away from coal mine fuelled generators to nuclear, gas and wind generation near the coast.
London's fossil fuel power stations hadn't actually produced power for decades. Their redevelopment (as the Tate Modern art gallery in Bankside, and as a mixed development with a mall in Battersea, not to mention housing developments in several more sites) is more recent, but I think they were all shut in the 1980s or earlier.
[1] https://youtu.be/F0JDK_71yDg?si=XkJZBFH4nVR0GBTV