Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1356; Plymouth to Start Point Blocks 1 & 2, Area in SqKm: 81; Plymouth to Start Point Blocks 1 & 2, Area in SqKm: 81, (01/12/2010 to 25/01/2011), Standard: IHO S44ed5 Order 1a. Contract: Natural England. FY 2010/11. Contractor: MMT.