Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1449; Hurlstone Point to Hinkley Point, Area in SqKm: 400, (05/01/2015 to 06/04/2015), Standard: IHO S44ed5 Order 1a. Contract: Shallow. FY 2014/15. Contractor: Gardline.