- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°43'59"N 5°16'25"W
- Eastings/Northings: 174033, 208898
- OS Grid: SM740088
- Mapcode Local: GBR G1.0W8R
- Mapcode Global: VH0V5.JPSS
Location and coordinates are for the approximate centre of Thorn Rock within this administrative area.
Geographic features and populated places may cross administrative borders.