We track 17 dive operators in Cornwall. 7 teach certification courses (9 PADI, 2 SSI). 6 run snorkelling trips. 1 offer accommodation alongside diving. Listings are ordered by Fin Rank: a published score for how complete and verified each listing is.
The 8 highest-ranked of 17. How Fin Rank works
| Rank | Operator | TripAdvisor | Discovery dive | Agencies | Website | |
|---|---|---|---|---|---|---|
| 1 | 4.8(34) | 5.0 | none | PADI · SSI | Visit |
Which centres run each site, named on their own websites or confirmed by the owner.

Fin lists 17 dive operators in Cornwall. 7 of them run certification courses.
PADI is the most common agency (9 centres), followed by SSI (2). BSAC, CMAS also appear.
1 operator in Cornwall offers accommodation alongside diving.
6 of the 17 operators we track run snorkelling tours.
Operators are sorted by Fin Rank, a 100-point profile strength score: contact details, what they offer, the dive sites they run, their Google reputation, whether the owner has claimed the listing, and whether their own website links to Fin. 0 listings here are owner-verified. The formula is published in full on the Fin Rank page.

Viewpoint Diving Cornwall is an SSI dive centre located on the Cornish Riviera coast at Pentewan. The operator provides a range of diving courses for children and adults, as well as guided dives and equipment services.
Harlyn Dive School is a PADI 5 star centre based in Cornwall that offers scuba training at all levels from beginner to technical. The operator provides guided dives and boat charters to various wrecks and reefs along the North Cornwall coast. They welcome divers from all training agencies and abilities.

Porthkerris Divers is a PADI 5 Star IDC Centre located in Cornwall, UK, offering a range of diving services and courses. They are situated on the coast with access to a dive centre and accommodation.
Karleyth Diving is an SSI dive centre based in the Roseland Peninsula of Cornwall. They offer a range of scuba training from beginner to professional levels, alongside guided shore and boat dives. The centre also provides equipment sales, servicing, and air or nitrox fills.
DiveUK is a dive centre located in Falmouth, UK, offering a variety of diving services and courses. They are a PADI 5 Star Dive Centre.
Seaways Diving Ltd, also known as Seaways Dive School, is a dive centre in Penryn, UK, offering a variety of diving courses and services. They are a PADI 5 Star IDC Centre.
Kennack Diving is a dive centre located in Porthkerris Cove, Cornwall, UK, offering diving courses and trips. They are situated in a scenic coastal location known for its diving opportunities.
Dive Newquay is a PADI 5 Star IDC Centre offering a wide range of diving courses, from beginner to professional levels. They provide guided dives, equipment rental, and boat trips in the Newquay area. The center is located at 40 East Street, Newquay.
Lundy Diving is a family-run business based in Ilfracombe that provides boat trips to Lundy Island. They offer guided diving and snorkelling excursions to the marine conservation area. The operator uses two boats to transport passengers for wildlife encounters and coastal cruises.
| 2 | Harlyn Dive School - EBO | 4.6(10) | none | $114 | BSAC · CMAS · PADI | Visit |
| 3 | 4.7(164) | 4.7 | none | PADI | Visit |
| 4 | Karleyth Diving | 5.0(8) | none | none | SSI | Visit |
| 5 | DiveUK | 4.9(63) | none | none | PADI | Visit |
| 6 | Seaways Diving | 4.9(61) | none | none | PADI | Visit |
| 7 | Kennack Diving | 5.0(14) | none | none | PADI | Visit |
| 8 | Wild Frontier Charters | 4.5(75) | 4.5 | none | none | Visit |
