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
  Crudgington Map CK82
SJ628179
SRS diagram not available
  Hodnet Map CK84
SJ621278
SRS diagram not available
  Peplow Map CK83
SJ623248
SRS diagram not available
  Tern Hill Map CL85
SJ634321
SRS diagram not available
Prices are shown here.