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
  Adderley Map CL87
SJ663401
SRS diagram not available
  Audlem Map CL88
SJ654430
SRS diagram not available
S3111 Fenns Bank Map CH87
SJ510391
SRS diagram D35
  Market Drayton Station Map CL86
SJ672348
SRS diagram not available
  Silverdale Junction Map CL86
SJ673352
SRS diagram not available
  Whitchurch Cambrian Junction Map CI88
SJ550413
SRS diagram not available
Prices are shown here.