- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°15'53"N 5°17'31"W
- Eastings/Northings: 165477, 45717
- OS Grid: SW654457
- Mapcode Local: GBR FW9Z.QNX
- Mapcode Global: VH12B.7L4W
Location and coordinates are for the approximate centre of Horse Rock within this administrative area.
Geographic features and populated places may cross administrative borders.