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
S3132 Forden Map BZ78
SJ219005
SRS diagram not available
S3189 Llanfyllin Map BW81
SJ146192
SRS diagram D413
S3130 Welshpool Map CA79
SJ230073
SRS diagram B15
Prices are shown here.