D'oh! I saw the name "Brian Clough" in happyduck's signature and didn't realize it was a quote! I thought that was happyduck's real name! I'm embarrassed!
Anyway, the question still stands, if anyone from Blighty can answer!
In the UK we have several main lines electrified and some urban areas but in the main we still rely on diesel trains for both passenger and freight. The recent attempts at further electrification have been scaled back in favour of bi-trains (electric with diesel packs for off electrified line running) but it is becoming rather a shambles over here.
Shame considering how progressive we were.
Many examples here: https://www.flickr.com/photos/trainsofhull/