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 279 Ashbury Crossing Map DB48
SU245877
SRS diagram D215
S 327 Bremell Sidings Map CX48
SU111876
SRS diagram P105
S 247 Fairford Map CX51
SP166010
SRS diagram D486
  Faringdon Map DB50
SU288950
SRS diagram not available
S 293 Highworth Station Map CZ49
SU196925
SRS diagram D358
S 289 Kingsdown Road Map CZ48
SU175887
SRS diagram D358
S 278 Knighton Crossing Map DB48
SU276890
SRS diagram D215
S 281 Marston Crossing East Map CZ48
SU202872
SRS diagram D72 also P261 (old box)
S 282 Marston Crossing West Map CZ48
SU196870
SRS diagram D72
S 280 Shrivenham Map DA48
SU236876
SRS diagram P261
S 284 Swindon Goods Yard Map CY48
SU156855
SRS diagram S911
S 283 Swindon Highworth Junction Map CY48
SU163858
SRS diagram L204
S 326 Swindon Loco Yard Map CY48
SU143852
SRS diagram P105
S 277 Uffington Map DC49
SU312904
SRS diagram P270 (1947, 196x)
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