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
S 611 Cattybrook Siding Map AU135
ST585833
SRS diagram D155
S 633 Pilning Branch Map AS137
ST568845
SRS diagram P230
S 612 Pilning Junction Map AS136
ST573840
SRS diagram P125
S 613 Pilning Station Map AS136
ST566843
SRS diagram P125
S2438 Portskewett Map AN140
ST505882
SRS diagram P286
S 629 Severn Beach Map AQ137
ST540848
SRS diagram P230
S1211 Severn Tunnel East Map AQ138
ST549852
SRS diagram P193 (inc WW2 IBS)
Prices are shown here.