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The signal box is the only place in the world still utilising 'pegging' (i.e. capable of giving a line clear to the box in rear) GWR Spagnoletti block instruments on the standard gauge. The Back Road instrument is a non-pegger over pegger double deck instrument, whilst the Up and Down Main instruments are single deck separate pegger and non-peggers, originating from Marshbrook Signal Box on the Shrewsbury - Hereford line.
== Diagram ==
[[File:Bewdley North box diagram.gif|800px]]
Signalling diagram as shown on the svrsig website. There are a few inaccuracies: The banner repeater on the footbridge for 29 signal was removed some years ago. Ground signals 25 and 27 are actually miniature semaphore arms (see abovebelow).
The layout at Bewdley North has been extensively altered in preservation to better suit modern needs and account for the loss of the Tenbury Line. A diagram of Bewdley North at 1956 may be seen here: [http://www.svrsig.org.uk/diags/S2647-2.pdf svrsig.org]
The Bewdley North box was raised bodily by around a foot in 1954 to allow greater space beneath the lever frame<ref>Marshall (1989), p135</ref>, to accommodate alterations that took place in a 1955 resignalling, which saw the arrival of the box's 'gallows' centre-pivot signal bracket immediately outside that has become an iconic part of the Bewdley scene.
==Signalling controlled from the box==
All signals controlled by Bewdley North are of late GWR/BR(W) steel tubular post design with enamel arms. Signals 29, 31 and 33 are of unusual centre pivot design, used where a conventional design signal's sighting may be compromised. These have wooden arms, although they are otherwise of the late GWR/BR(W) steel tubular post design. Signals 30, 31, 33, 35 and 36 are pre-preservation, although originally signal 30 had a sister arm on its bracket, the place for which can still be seen. Signals 25 and 27 are rare early 20th century GWR miniature arm signals that evolved into the more familiar disc. These followed the signals that swivelled 90 degrees on a vertical access giving a simple red or green plate and lamp indication. These were usually worked in tandem with the point rather than independently by a separate lever.
==References==
