76 reef dive sites in United Kingdom.
Biggest areas: England (17), Argyll and Bute (11), Scotland (8), Highland (6) and Northumberland (5).
Recorded maximum depths range from 6 m to 55 m (65 of 76 sites have a depth).
By level: 33 beginner, 7 intermediate, 11 advanced and 6 technical.
Species confirmed at these sites by diver sightings (three or more independent divers) or by two or more independent sources, with the number of sites each is confirmed at.