Some more shots of interest, authors unknown but off the web, mostly many years ago.
View looking south toward the bridge and Ludgate hill station (EMU). To the right, the original descent to Snow Hill and Farringdon.
View north from Blackfriars showing Ludgate Hill station, end of train would be on the bridge.
Another view looking south showing the bridge and Ludgate Hill station
Another view looking north showing the bridge, almost the exact same location as the class 24. Also shows the original descent to Snow Hill and Farringdon.
View today from Blackfriars showing new descent further south, Ludgate Hill station would have been just above that red brick parapet.
Regards