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 401 | Blatchbridge Junction | Map CO37 ST781458 | SRS diagram X23 (1951) B17 (1970) |
| S 398 | Clink Road Junction | Map CO38 ST796487 | SRS diagram D506 |
| S 410 | Cranmore | Map CN36 ST667430 | SRS diagram D287 |
| S 397 | Fairwood Junction | Map CO38 ST842511 | SRS diagram D95 |
| S 399 | Frome North | Map CO38 ST786480 | SRS diagram D506 (1900) X33 (1970) |
| S 400 | Frome South | Map CO38 ST784476 | SRS diagram X23 (1950) |
| S 501 | Frome West | Map CO38 ST782480 | SRS diagram D490 |
| S 498 | Mells Road | Map CM39 ST716511 | SRS diagram D490 (c. 1953) |
| S 496 | Radstock North | Map CL39 ST690549 | SRS diagram D153 |
| S 497 | Radstock South | Map CL39 ST691546 | SRS diagram D153 |
| S 413 | Shepton Mallet | Map CN36 ST617432 | SRS diagram D287 |
| S 402 | Witham | Map CN36 ST743408 | SRS diagram P187 (1943, 1972) |
| Woodlands | Map CN36 ST771428 | SRS diagram S133 | |
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