NoTanx, London Freediving Courses

Teaching & promoting freediving in the UK since1999.

350 pool sessions a year & hundreds of events.

NoTanx Freediving

Call now : +44 (0) 208 546 7302

Meet the Team

Marcus Greatwood

Founder & senior instructor. Having coached world & held national records... Marcus now concentrates on videography & teaching.

Upcoming Events

Freediving is the art of moving efficiently underwater on a single breath. The NTX training system has, at its core, a focus on ENJOYMENT & RELAXATION.
Techniques start with awareness & are suitable for everyone.


The health benefits are innumerable;

our techniques can relieve asthma, stress and panic attacks.


Training with NoTanx can gain improvements in all activities

e.g.  SCUBA, triathlons, Brazilian jujitsu, golf & more

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