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 324 Calne Map CU44
ST995707
SRS diagram S288
S 318 Chippenham East Map CS45
ST924740
SRS diagram L241
S 319 Chippenham West Map CS45
ST919737
SRS diagram L241
S 316 Dauntsey Map CS45
ST992802
SRS diagram P178
S 322 Lacock Map CR44
ST902703
SRS diagram P120
S 317 Langley Crossing Map CS45
ST936751
SRS diagram P178
S 320 Thingley Junction Map CR44
ST902709
SRS diagram P136 also S866 (1935)
Prices are shown here.