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 |
| S1828 | Aberdylais | Map CK199 SS776994 | SRS diagram L223 |
| S1894 | Abergwynfi | Map CU195 SS892963 | SRS diagram D203 |
| S1824 | Aberpergwm Junction | Map CT202 SN859047 | SRS diagram not yet available |
| S1888 | Blaengwynfi | Map CU196 SS888968 | SRS diagram P297 |
| S1923 | Cadoxton Sidings | Map CJ199 SS760987 | SRS diagram X21 |
| Cefn Mawr | Map CN200 SN800005 | SRS diagram not available | |
| S1924 | Cilfrew | Map CL201 SN776007 | SRS diagram X21 |
| S1893 | Cymmer | Map CS195 SS859960 | SRS diagram D203 |
| S1887 | Cymmer Afan | Map CS195 SS861960 | SRS diagram L182 (1960) |
| S1897 | Duffryn No. 1 | Map CJ196 SS778896 | SRS diagram not available |
| S1898 | Duffryn No. 2 | Map CJ196 SS781897 | SRS diagram W84/05 |
| S1886 | Duffryn Rhondda East | Map CR195 SS844957 | SRS diagram D421 |
| S1919 | Glyncorrwg | Map CT199 SS875992 | SRS diagram W84/20 |
| S1827 | Melyncourt Sidings | Map CP201 SN821021 | SRS diagram L223 |
| S1829 | Neath Junction (G.W.) | Map CJ198 SS755982 | SRS diagram L14 |
| S1922 | Neath Yard | Map CJ199 SS754983 | SRS diagram X21 (c. 1957) |
| S1830 | Neath and Brecon Junction | Map CJ199 SS750980 | Click here for Box diagram for 1956 and 1969. SRS diagram not yet available |
| S1825 | Resolven East | Map CQ201 SN836031 | Click here for Box diagram for 1950 as well as the mechanical locking table and the dog chart. SRS diagram D69 |
| S1826 | Resolven West | Map CQ201 SN830026 | SRS diagram D69 |
| S1912 | Tonmawr Junction | Map CO198 SS805963 | SRS diagram W84/19 |
| Prices are shown here. | |||