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
S3180 Blodwell Junction Map CA82
SJ251230
SRS diagram not available
S3183 Llanrhaiadr Mochnant Map BW83
SJ133249
SRS diagram not available
S3187 Llansantffraid Map BZ82
SJ223202
SRS diagram D413
Prices are shown here.