- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°24'49"N 3°10'11"W
- Eastings/Northings: 318741, 168949
- OS Grid: ST187689
- Mapcode Local: GBR HY.Q3CZ
- Mapcode Global: VH6FM.0QLM
Location and coordinates are for the approximate centre of Roundbush Rocks within this administrative area.
Geographic features and populated places may cross administrative borders.