Partnership · Great Britain Freediving
A GB athlete on a steep climb
Harry McCahill went from a Covid-lockdown hobby to the world's top ten in under two years — in the purest, most demanding discipline in the sport. A fast-rising British athlete, a coaching business as a built-in audience, and a story that markets itself.
Allie Reilly
Why partner with Harry
Trajectory
Competing only since 2024 — already 8th in the world, the deepest no-fins diver in Britain, and three national records. The climb is the story.
Visibility
A growing, visually stunning sport on televised international stages, with multi-platform content across Instagram, TikTok and YouTube.
Built-in audience
An AIDA Master Instructor with a coaching business and 100+ certified students — an engaged community, not just a follower count.
Allie Reilly
About
Harry McCahill is a British competitive freediver, national record holder, and AIDA Master Instructor based in Dominica. After discovering the sport during the pandemic, he relocated to the Caribbean in 2022 to train full-time — and in 2025 finished 8th in the world in Constant Weight No Fins, the discipline's purest and most demanding form. The deepest no-fins diver in Britain and second-deepest in British history, he holds three CMAS national records and earned a wild card to the 2026 AIDA Depth World Championships in Limassol. Alongside competing, Harry coaches divers from beginner to competition level, grounded in relaxation, technique, and nervous-system control.
Proof points
- 8th in the world in Constant Weight No Fins, 2025.
- Deepest no-fins diver in the UK · 2024, 2025, 2026 — second-deepest in British history.
- 3 CMAS national records held.
- Personal bests: CWT 91m · FIM 90m · CWTB 85m · CNF 80m.
- 2026 World Championships wild card · Limassol, Cyprus.
- Competed for the UK at the 2024 CMAS World Championships.
- Elite-event roles: safety diver, 2024 AIDA Worlds (Corsica); commentator, Vertical Blue 2023.
- AIDA Master Instructor since 2021 · 100+ students certified across AIDA levels.
Platform & reach
Founder, Co-Owner & Managing Director of Blue Element Freediving Inc, Dominica — a world-class training centre and host of an international competition.
Fall calm, rise strong
Let's build something together
Harry McCahill · Freediver & AIDA Master Instructor · Soufrière Bay, Dominica