- Category: Water Feature
- Type: Island
- Latitude/Longitude: 54°14'7"N 0°18'57"W
- Eastings/Northings: 509857, 483509
- OS Grid: TA098835
- Mapcode Local: GBR VM7G.CG
- Mapcode Global: WHHDD.3SSV
Location and coordinates are for the approximate centre of Old Horse Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.