Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1442; Dover Strait TSS Separation (Central), Area in SqKm: 293, (17/11/2013 to 30/03/2014), Standard: IHO S44ed5 Order 1a. Contract: Shallow. FY 2013/14. Contractor: Gardline.