RISC OSMap of G.W. SignalboxesRISC OS
http://www.svrsig.org/gwmap/GWMap.htm
Sxxxx numberSignal Box nameView on map squareOther information including SRS diagram number
S1231 Alexandra Dock Junction Map ED186
ST302864
SRS diagram L44
S1840 Briton Ferry Road Map EE186
SS713938
SRS diagram not available
S1232 Ebbw Junction Map EC186
ST303860
SRS diagram L45 (c. 1960) also P307 (1955)
S1234 Marshfield Station Map DZ183
ST267818
SRS diagram P271
S1311 Pillgwenlly Map EH186
ST317865
SRS diagram not available
S1233 St. Brides Map EB184
ST290835
SRS diagram P271
S1492 St. Mellons East Map DY182
ST244801
SRS diagram D305
S1493 St. Mellons West Map DX181
ST235795
SRS diagram D305
S1361 West Mendalgief Map EE186
ST304863
SRS diagram S839
Prices are shown here.