Before the re-imagining of London Bridge station in the 2010’s, it was the subject of a huge re-signaling scheme in the mid 1970’s. The idea was to completely redesign the approach, especially across Borough Market Junction. This was a notorious bottleneck where trains from Charing Cross and Cannon Street, as well as approaching traffic from Kent and Sussex would almost always grind to a halt at peak times.
The solution was to create more throughput by using crossovers from Charing Cross and Cannon Street and using a new flyover at St Johns. Some terminal platforms were also connected to the Charing Cross lines in order to facilitate more throughput.
The entire area would be controlled via a massive new signal control room at London Bridge, which would mean the demise of at least 16 smaller signal boxes nearby.
Amazingly for such a large project, it was finished on time, at a cost of £21.5 million pounds in 1978. Below are some scans from a mini booklet produced by British Rail to commemorate the achievement.
I must thank Mr David Bonnett, who very kindly donated this leaflet and other materials to myself.
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