Seasearch Nationwide: Gathers information on seabed habitats and associated marine wildlife in Britain & Ireland through participation of volunteer recreational divers.
UK Hydrographic Office: Works with a wide range of data suppliers and partners to provide marine geospatial data to support maritime navigation, safety, security and marine development around the UK and worldwide.
Maritime and Coastguard Agency :Works to prevent the loss of life on the coast and at sea. produce legislation on maritime matters, provide certification to seafarers and a 24-hour maritime search and rescue service around the UK coast, and international search and rescue through HM Coastguard.
XCWeather: Up to the minute inshore & offshore UK wind information