An oil and gas industry site survey acquired between August and September 2022. The block numbers traversed were 21/4, 15/29.

An oil and gas industry seabed infrastructure, semi-sub rig, environmental site survey acquired between March and April 2015. The block numbers traversed were 13/22, 13/17.

An oil and gas industry rig site survey acquired between November and December 2018. The block number traversed was 48/18.

An oil and gas industry site survey acquired under licence P1889 between July and September 2014. The block number traversed was 12/27.

An oil and gas industry semi-sub rig, pipeline, environmental site survey acquired under licence P2013 between June and July 2017. The block numbers traversed were 21/5, 22/1, 15/30.

An oil and gas industry site survey for a semi-submersible rig replacement acquired under licence E439. The block numbers traversed were 15/16, 15/11, 14/20.

This marine multibeam survey took place in May 2008 in Liverpool & Tremadog Bays on board the RV Prince Madog. The survey was carried out by the British Geological Survey (BGS) and Proudman Oceanographic Laboratory (POL). These data are archived by BGS.

An oil and gas industry debris clearance, drilling hazard, environmental, jack-up rig, semi-sub rig site survey acquired under licence P2082 in October 2014. The block numbers traversed were 30/13, 30/18.

An oil and gas industry pipeline inspection site survey acquired by geophysical methods in July 2017. The block numbers traversed were 19/11, 19/12.

Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1117; Long Sand Head, Area in SqKm: 4, (28/07/2005 to 28/07/2005), Standard: IHO S44ed4 Order 1. Contract: RRS (2005/06). FY 2005/06. Contractor: RN (NP1016).