These are the ten destinations British divers search for most when looking for a dive centre, with the places where centres gather, the affiliation that dominates and how many say they speak English shown below.
Dive centres in the Maldives

Many dive centres are based in resorts, while others operate from inhabited islands such as Fuvahmulah, known for its tiger sharks. Ari Atoll and Baa Atoll have dive centres too, and PADI dominates. The catalogue lists 108 dive centres in the Maldives, of which 39 say they speak English.
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Dive centres in Egypt

Egyptian dive centres gather in Sharm el Sheikh, Hurghada, Dahab and Marsa Alam, with PADI the main affiliation. At Dahab and Marsa Alam, many dives start from the shore, while centres in Sharm el Sheikh and Hurghada commonly run boat trips. There are 186 listed dive centres, and 112 say they speak English.
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Dive centres in Thailand

Koh Tao has the most dive centres in Thailand, with PADI the main affiliation. On the Andaman Sea, centres in Phuket, Khao Lak and Koh Lanta run trips to the islands. The country has 216 listed dive centres, including 127 that say they speak English.
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Dive centres in Indonesia

Indonesia has the most dive centres in the table. On Bali, they line the coast at Amed and Pemuteran, and on the island of Nusa Penida; the Gili Islands, off Lombok, have them too. PADI is the majority affiliation and SSI is well represented, while 306 centres are listed and 158 say they speak English.
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Dive centres in Malta

Dive centres gather in the north of the main island, from Sliema and St Julian's to St Paul's Bay and Mellieħa, and on Gozo around Marsalforn. Many dives are from the shore, including wreck dives, and PADI dominates. Malta has 64 listed dive centres, of which 35 say they speak English.
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Dive centres in the Canary Islands

The dive centres are spread between Tenerife, Lanzarote and Gran Canaria, where diving is possible all year round. PADI dominates and SSI follows among the listed affiliations. There are 117 dive centres in the catalogue, and 63 say they speak English.
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Dive centres in the Philippines

Dive centres are spread across many islands, including Puerto Galera, Panglao on Bohol, Coron, Moalboal, Dauin and Malapascua. They are often small outfits, sometimes based in a resort, and PADI dominates. The Philippines has 217 listed dive centres, with 96 saying they speak English.
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Dive centres in Mexico

Cozumel and Playa del Carmen gather the dive centres of the Riviera Maya, while Tulum is the base for cenote diving. La Paz has the centres serving the Sea of Cortez, and PADI is by far the main affiliation. Of the 199 listed dive centres in Mexico, 121 say they speak English.
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Dive centres in Portugal

Dive centres line the Algarve, Sagres among them, while those in Madeira operate from Caniço, Funchal and Caniçal. Other centres serve Porto Santo, Sesimbra south of Lisbon and Peniche, the port for the Berlengas. SSI and PADI share the listed affiliations. Portugal has 40 dive centres in the catalogue, and 12 say they speak English.
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Dive centres in the United Kingdom

Dive centres run along the south coast, at Plymouth and Poole, and in Cornwall around Helston, Truro and St Austell. Further north, you will find them at Oban in Scotland, in Northumberland and in Northern Ireland. SSI and PADI share the listed affiliations, with 31 dive centres in the catalogue and 8 saying they speak English.
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