The failure was on the GWML, it affected services to places like cardiff, Devon, Oxford, as well as the “Elizabeth line” branded trains running on the line. Th

The failure was on the GWML, it affected services to places like cardiff, Devon, Oxford, as well as the “Elizabeth line” branded trains running on the line. There’s nothing new about the line. Obviously the overhead power wasn’t there in 1840, and indeed the rails were at a different gauge, but the failure was in the GWML, on a Paddington to Cardiff express on the Down Main. The failure was on a track the Elizabeth Line trains don’t even use, however due to the type of failure a massive section of overhead power had to be shut off