Map of G.W. Signalboxeshttp://www.svrsig.org/gwmap/GWMap.htm
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| Sxxxx number | Signal Box name | View on map square | Other information including SRS diagram number |
| S 600 | Badminton | Map CP47 ST810813 | SRS diagram P53 |
| S2434 | Beachley Junction | Map CI50 ST555950 | SRS diagram D290 |
| Beanacre | Map CQ43 ST900667 | SRS diagram S145 | |
| S 572 | Box | Map CP43 ST815686 | SRS diagram P61 |
| S 662 | Charfield (L.M.S.) | Map CN50 ST723922 | SRS diagram not available |
| S2436 | Chepstow Station | Map CI49 ST536937 | SRS diagram B178 |
| Chepstow West | Map CH49 ST536931 | SRS diagram not available | |
| S 318 | Chippenham East | Map CS45 ST924740 | SRS diagram L241 |
| S 319 | Chippenham West | Map CS45 ST919737 | SRS diagram L241 |
| S 601 | Chipping Sodbury | Map CN47 ST736815 | SRS diagram P295 |
| S 571 | Corsham | Map CQ43 ST871697 | SRS diagram P61 |
| S 316 | Dauntsey | Map CS45 ST992802 | SRS diagram P178 |
| Farleigh Down | Map CP43 ST801675 | SRS diagram W9/34 | |
| S 313 | Hullavington | Map CR47 ST900828 | SRS diagram P53 also L238 (1937) |
| S 322 | Lacock | Map CR44 ST902703 | SRS diagram P120 |
| S 317 | Langley Crossing | Map CS45 ST936751 | SRS diagram P178 |
| S 312 | Malmesbury | Map CS48 ST932878 | SRS diagram S855 |
| S 388 | Melksham | Map CQ43 ST900645 | SRS diagram P120 |
| S 664 | Rangeworthy (L.M.S.) | Map CN48 ST704861 | SRS diagram not available |
| S 320 | Thingley Junction | Map CR44 ST902709 | SRS diagram P136 also S866 (1935) |
| S 321 | Thingley West | Map CQ44 ST898704 | SRS diagram P136 |
| S2437 | Thornwood | Map CH49 ST537910 | SRS diagram not available |
| S 602 | Wapley Common | Map CM47 ST712807 | SRS diagram P295 |
| S 663 | Wickwar (L.M.S.) | Map CN49 ST725891 | SRS diagram not available |
| S2435 | Wye Valley Junction | Map CI49 ST546940 | SRS diagram D290 |
| S 665 | Yate Main Line Junction (L.M.S.) | Map CM48 ST701827 | SRS diagram not available |
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