The Marine Aggregate Levy Sustainability Fund (MALSF) commissioned a series of Regional Environmental Characterisation (REC) surveys via the Marine Environment Protection Fund (MEPF) to develop understanding of submerged habitats and heritage in Britain. The aim was to acquire high quality data to enable broad scale characterisation of the seabed habitats, their biological communities and potential historic environment assets. The surveys were conducted in the following areas - Outer Bristol Chanel (2003 – 2005), Eastern English Channel (2005 – 2006), South Coast (2007 - 2010), Outer Thames (2007), East Coast (2008 - 2009), Humber (2008 - 2009). The Geology and Geophysics component of the data are archived by British Geological Survey (BGS) in the Marine Environmental data and Information Network (MEDIN) Data Archive Centre (DAC) for Geology and Geophysics. The data includes bathymetry, sidescan sonar, sub-bottom profiler, magnetometer, seabed video and photographs, Particle Size Analysis (PSA) data, vibrocore (logs and images). Data are delivered via the BGS Offshore GeoIndex www.bgs.ac.uk/GeoIndex/offshore.htm. Additional data are available on request enquiries@bgs.ac.uk. Other data types have been archived with the other MEDIN DACs as appropriate (UKHO DAC for bathymetry data and DASSH DAC for biological data). The MALSF ceased operation at the end of March 2011 (http://www.marinealsf.org.uk/).

MONA LISA (Marine and Onshore North Sea Acquisition for Lithospheric Seismic Analysis) seismic data was acquired by BIRPS (the British Institutions Reflection Profiling Syndicate) across the Ringkobing-Fyn High of the central North Sea were designed to study the crust near a hypothesized Caledonian age triple junction associated with the colliding continental crust of Laurentia, Avalonia (Gondwanaland) and Baltica. The specific target was the eastward continuation of the Caledonian Front (Iapetus Suture), as previously recognised on NEC (North East Coast line), MOBIL (Measurements over Basins to Image Lithosphere), NSDP (North Sea Deep Profile) and BABEL (Baltic and Bothnian Echoes from the Lithosphere) profiles, in northern Europe. 1112 km of data were acquired, recorded to 26 s two-way time.

Faeroe-Iceland Ridge Experiment (FIRE) was acquired by BIRPS (the British Institutions Reflection Profiling Syndicate). The primary target was anomalously thick oceanic crust along the Faeroe-Iceland Ridge that was possibly formed by underplating due to the proximity of the Iceland hotspot. FIRE made use of 110 land seismometers to record the airgun shots. The resulting velocity models and reflector geometries have proved critical in interpretation of variations in crustal volumes along the ridge. The data were recorded to 23 s two-way time.

The SEA portal is managed by the BGS on behalf of DECC and provides free access to downloadable data, information and reports which have been produced through the SEA process. The Department of Trade and Industry (now DECC) began a sequence of sectoral SEAs of the implications of further licensing of the UK Continental Shelf (UKCS) for oil and gas exploration and production in 1999. The SEA Process subdivided the UKCS into eight areas shown; beginning in 2008, integrated Offshore Energy SEAs have been undertaken that cover the whole UKCS. An integral part of the SEA programme has been a series of research and monitoring surveys commissioned to acquire new data about the offshore environment and used to help inform the relevant SEAs. Many files can be downloaded directly from portal. Those that are too large to download can be ordered via the website for postal delivery from BGS.

This dataset comprises data from Wessex Archaeology surveys which were conducted over various wreck sites between 2003 and 2010. Three of these datasets were acquired in English waters, one in Welsh waters and one in Scottish waters. The geology and geophysics component of the data are archived by British Geological Survey (BGS) in the Marine Environmental data and Information Network (MEDIN) Data Archive Centre (DAC) for Geology and Geophysics. The data include multibeam echosounder, single-beam echosounder, sidescan sonar, sub-bottom profiler, magnetometer, and geological data (vibrocore logs and photos). Data were also provided to other archive centres as appropriate - UKHO (bathymetry), Royal Commission Ancient and Historic Monuments Wales (geophysics), Royal Commission on the Ancient and Historical Monuments of Scotland (geophysics and diving/ROV), Archaeology Data Service (diving/ROV). Although generated for archaeological purposes, these high quality and resolution data are capable of re-use by marine surveyors and scientists from a range of different fields. Data are delivered via the BGS Offshore GeoIndex www.bgs.ac.uk/GeoIndex/offshore.htm and additional data are available on request enquiries@bgs.ac.uk.

BIRPS (the British Institutions Reflection Profiling Syndicate) acquired almost 650 km of offshore seismic data and 300 km of onshore seismic data over the Chicxulub impact crater. The data were recorded to 18 s two-way time.

WESTLINE was acquired by BIRPS (the British Institutions Reflection Profiling Syndicate). The seismic data image the faulted conjugate margins of the Rockall Trough and the intrabasinal sediments. The seismic data were shot to 18 s two-way time along a single 450 km-long transect.

BGS offshore marine products are made available to view via this web map service. The 1:250 000 scale offshore geological maps in the UTM series (Universal Transverse Mercator projection) are available digitally as two themes: bedrock geology (DigRock250) and sea-bed sediments (DigSBS250). Marine Hard Substrate Dataset (DiGHardSubstrate250k) is also made available via this service.

This British Geological Survey (BGS) regional marine sampling survey (comprised of four legs) took place from March to May 1974 in North Sea and Bristol Channel on board the MV Whitethorn. Seabed samples and cores were collected using Shipek grab, Gravity corer, Vibrocorer and wireline drilling equipment. Subsurface data were gathered using a Sparker seismic instrument, 52km, See 1974/WH/9. These data are archived by BGS. Technical details of the survey are contained in BGS Internal Report 74/9 &14.

The Manacles Marine Conservation Zone 2015 baseline survey. Sampling equipment: Drop camera and 0.1 m2 Mini-Hamon grab.Drop Camera survey collecting video and still images of the seabed habitats within The Manacles MCZ. Hamon Grab survey within The Manacles MCZ. These data are archived with the Marine Environmental Data and Information Network (MEDIN) Data Archive Centres (DACs) including the British Geological Survey (BGS) DAC for geology and geophysics, The Archive for Marine Species and Habitats Data (DASSH) and the United Kingdom Hydrographic Office (UKHO) bathymetry DAC.The full site data package (excluding raw bathymetry) is also available on request from BGS.