- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°13'46"N 4°49'1"W
- Eastings/Northings: 199179, 40423
- OS Grid: SW991404
- Mapcode Local: GBR ZW.6Q0C
- Mapcode Global: FRA 08SF.558
Location and coordinates are for the approximate centre of Cadythew Rock within this administrative area.
Geographic features and populated places may cross administrative borders.