Editing Liverpool Street station (section)

=====Signal box operation 1935=====
In 1935 the approaches to Liverpool Street and the station itself, were controlled by seven signal boxes, which fell under the responsibility of the Liverpool Street station master. The boxes were:
* '''East London Junction''' - this was primarily for traffic to and from the [[East London Line]] and in 1935 a route onto the Southern Railway via [[Whitechapel railway station|Whitechapel]] 
* '''Bishopsgate North''' - this box controlled the suburban line only; it was situated on the former (closed 1916) [[Bishopsgate (Low Level) railway station|Bishopsgate Low Level]] down suburban platform.
* '''Bishopsgate South''' - stood on the former Down Local platform of [[Bishopsgate (Low Level) railway station|Bishopsgate Low Level]] and controlled traffic on the Local and Through lines. 
* '''Liverpool Street West''' - was the controlling box for the station working. All trains were block signalled, irrespective of whether they were running into the west or east side of the station. The box had 203 active levers and 37 spare and during the busiest period of the day there were six signalmen on duty along with a telephone and booking lad. A train to Liverpool Street East Box would be block signalled from the West box.
* '''Liverpool Street East''' - situated at the country end of Platform 11; it had 127 active and 9 spare levers, and controlled traffic passing on or off the Local or Through lines, into or out of platforms 11 to 18. Departing trains would be despatched to the west box.
* The remaining two signal boxes were platform boxes whose purpose was to electrically lock a platform out when a train had arrived in it. The platform would not be freed (so other trains could not be routed into it) until all the vehicles brought into it were cleared and the platform was again ready for another train to be accepted. These boxes were located at the country ends of Platform 4/5 and 14/15.<ref>{{cite journal |last1=Calver |first1=H C R |title=Liverpool Street 1935 Part 2 |journal=Ipswich Transport Society Journal |date=February 1980 |volume=185}}</ref>