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==Signal Box S and T Plates==
[[File: Bewdley_North_20151228.jpg |thumb|300px|right| Signal Box displaying 'S' and 'T' plates]]
The front of Bewdley North box has two plates showing the letters ‘S’ and ‘T’. These were used in early times to indicate that the signals and telegraph were functioning correctly, indicated by white letters on a black background. In the event of a failure which the signalman could not rectify himself, reversing a plate to display a red letter on a white background would act as a visual request to the guard of a passing train to notify the appropriate maintenance staff at the nearest station.<ref Name ="Marshall116">SVR News 116, letter from John Marshall citing “The Signal Box”, Oxford Publishing Co 1986</ref><gallery>File:Bewdley_Box_S_20170401. jpg|Bewdley North displaying a Signal failure warning (1 April 2017)</gallery>
The introduction of telephones, first minuted by the GWR on the SVR in 1906, would have rendered this process unnecessary. However plates survived on some boxes on branch lines as late as the 1960s<ref>SVR News 118, letter from Michael V.E. Dunn citing British Railway Journal, October 1983</ref>, therefore their inclusion on a box in the era represented by the SVR is not wholly inappropriate.
