- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°12'10"N 4°54'34"W
- Eastings/Northings: 192457, 37709
- OS Grid: SW924377
- Mapcode Local: GBR ZP.Z9MF
- Mapcode Global: FRA 08LH.C2J
Location and coordinates are for the approximate centre of Horse Rock within this administrative area.
Geographic features and populated places may cross administrative borders.