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 600 Badminton Map CP47
ST810813
SRS diagram P53
S 601 Chipping Sodbury Map CN47
ST736815
SRS diagram P295
S 321 Thingley West Map CQ44
ST898704
SRS diagram P136
S 602 Wapley Common Map CM47
ST712807
SRS diagram P295
Prices are shown here.