There was permission granted a few years ago to build a new metallurgical deep shaft mine in the lake district, but I guess this quashes that.
Warships need to be able to go fast, so all of the Royal Navy's ships had been switched to oil long ago (because oil-fueled ships go about twice as fast) and that never changed during the war, but the thousands of "merchant" ships they built (and asked the US to build for them) ran on coal.
Britain's coal being closer to the surface compared to other reserves was a reason the Industrial Revolution started in the United Kingdom and not elsewhere.
I had the chance to visit the Science and Industry Museum in Manchester a few years ago (on a rainy day!), definitely with the visit if you're in the area: