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 241 Brize Norton and Bampton Map DB53
SP305060
SRS diagram B110
S 242 Carterton Map DB53
SP286049
SRS diagram S802
S 247 Fairford Map CX51
SP166010
SRS diagram D486
  Faringdon Map DB50
SU288950
SRS diagram not available
S 246 Lechlade Map CZ52
SP219005
SRS diagram D486
Prices are shown here.