GO TECHNICAL WITH TDI
Become a diving explorer...

As one of the first agencies to provide training in mixed gas diving and rebreathers, TDI is an innovator of new diving techniques and programs which previously were not available to the general public.
TDI is the largest technical certification agency in the world. TDI professionals are held to the highest standard to ensure quality training throughout the world. This means that as a diver taking a TDI course, your instructor will have documented his experience and knowledge prior to achieving that rating.

TDI is committed to offering the highest quality training supported by the latest materials with the most up to date information and techniques. TDI materials are written by authors that acutely conduct the type of diving they are writing about. Those same materials are updated as technology and equipment change.

INTRO TO TECH
Take your first steps into tech...
WHY NOT TAKE
A COMBINED COURSE?
Fast-track your technical diving career - why not combine this course with the Advanced Nitrox Diver course? Contact us for pricing today!
COURSE SCHEDULE
Technically a recreational course, the Intro to Tech course introduces students to the world of technical diving.

The TDI Intro to Tech Course is an introductory course that expands on recreational training by improving dive planning methods, in-water skills, and streamlining existing gear configurations in a controlled and fun learning environment.

The objective of this course is to familiarise you with a twinset and enhance your open water diving skills (such as buoyancy, trim, and situational awareness), and to introduce you to advanced gas planning techniques within a no-decompression context. The course is also ideal for anyone who wants to work on their basic skills as these are useful in all forms of diving.

COURSE INFO
Prerequisites:
  • Minimum of 15 years old and be an SDI Open Water Diver (or equivalent) and have a minimum of 25 logged dives
Duration:
  • 2 Days
Includes:
  • Learning materials (either eLearning or Intro to Tech manual) and a Certification Card
Cost:
  • £250.00
Further Information:
NITROX DIVER
Take advantage of increased bottom times...
Nitrox Diver is one of the most popular courses as Nitrox allows you to increase your no decompression dive time.

This half day course doesn't even require you to get wet and it's also available online, so you can complete the theory in your own time followed by a few practical exercises to finish your education.

The course covers the benefits, hazards and proper procedures for diving with Nitrox as well as equipment considerations, the correct technique of cylinder labeling and analysing Nitrox. On completion you will be certified to use Nitrox mixes between 22 - 40 %.
COURSE INFO
Prerequisites:
  • Minimum of 15 years old and be an SDI Open Water Diver (or equivalent)
Duration:
  • 0.5 Days
Includes:
  • Learning materials (either eLearning or Nitrox Diver manual) and a Certification Card
Cost:
  • £100.00
Further Information:
ADVANCED NITROX DIVER
Expand your dive time...
WHY NOT TAKE
A COMBINED COURSE?
Why not combine this course with the TDI Decompression Procedures course? Or to reduce your risk of narcosis, why not combine this course with the TDI Helitrox course?
COURSE SCHEDULE
The Advanced Nitrox Diver course covers all the topics of the Nitrox Diver course in greater detail, with in-depth coverage of CNS and whole body oxygen toxicity and tracking, common blending methods, dive planning and gas consumption calculations.

In addition you will also conduct 4 Nitrox dives and on completion you will be certified to use Nitrox mixes from 22-100% as a breathing gas for dives that do not require staged decompression.

Often taught in conjunction with the TDI Decompression Procedures course, this can be considered the foundation of your technical diving career. TDI Advanced Nitrox is also a must for SCR or CCR divers.
COURSE INFO
Prerequisites:
  • Minimum of 15 years old, be an SDI or TDI Nitrox Diver (or equivalent) and have a minimum of 25 logged dives
Duration:
  • 2-3 Days
Includes:
  • Learning materials (either eLearning or Advanced Nitrox Diver manual) and a Certification Card
Cost:
  • £250.00
Further Information:
DECOMPRESSION PROCEDURES DIVER
Go beyond recreational bottom time limits...
The Decompression Procedures Diver course is the first course that prepares you for planned staged decompression diving.

With 4 dives to a maximum operating depth (MOD) of 45m this course teaches you knowledge and skills such as equipment set-up, decompression techniques and breathing gasses, gas management, contingency planning and problem solving procedures.

For divers who already hold the Decompression Procedures Diver rating, we also offer a convenient 1-day upgrade to the new TDI Helitrox course which introduces the use of helium-based bottom mixes.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old, be an SDI Advanced Open Water Diver (or equivalent) and have a minimum of 25 logged dives
Duration:
  • 2 Days
Includes:
  • Learning materials (either eLearning or Decompression Procedures Diver manual) and a Certification Card
Cost:
  • £300.00
Further Information:
HELITROX DIVER
Discover the benefits of helium in your diving...
ALREADY DECO
PROCEDURES RATED?
For divers who already hold a TDI Decompression Procedures Diver rating, we offer a convenient 1-day upgrade which builds upon your knowledge and supplements it with the use of helium-based bottom mixes for just £150.
COURSE SCHEDULE
The TDI Helitrox Diver Course gives you the tools to carry out staged decompression dives utilising helium in the breathing mixture to reduce the effects of inert gas narcosis.

This course has all the benefits of the Decompression Procedures course (staged decompression, equipment set-up, decompression techniques and breathing gasses, gas management, contingency planning and problem solving procedures over 4 dives to a maximum operating depth (MOD of 45m) but allows the use of helium mixes up to a maximum of 20%. Making this course ideal for anyone who suffers from nitrogen narcosis.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old, be an SDI Advanced Open Water Diver (or equivalent) or TDI Intro-to-Tech and TDI Advanced Nitrox (or equivalent). Have a minimum of 50 logged dives.
Duration:
  • 2-3 Days
Includes:
  • Learning materials (either eLearning or Decompression Procedures Diver manual) and a Certification Card. A Trimix Diver manual is available as an optional extra.
Cost:
  • £300.00 + instructor's gas at cost
Further Information:
Advanced Nitrox &
Decompression Procedures Diver
This course combines the Advanced Nitrox Diver and Decompression Procedures Diver courses but is more efficient as it only requires 6 open water dives instead of 8.

Upon completion you will be certified to use Nitrox mixes from 22 - 100% requiring staged decompression to a maximum operating depth (MOD) of 45 metres. For divers wishing to maximise their inwater safety and dive time, this combined course is a great option.

The TDI Decompression Procedures Course combined with the TDI Advanced Nitrox course form the foundation of all other technical courses. After these two courses and some additional experience, the stage has been set for you to move onto additional technical levels.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old, be an SDI Advanced Open Water Diver (or equivalent) and have a minimum of 25 logged dives
Duration:
  • 3-4 Days
Includes:
  • Learning materials (either eLearning or manuals for both Advanced Nitrox + Decompression Procedures) and a Certification Card
Cost:
  • £500.00
Advanced Nitrox &
Helitrox Diver
This course combines the Advanced Nitrox Diver and Helitrox Diver courses but is more efficient as it only requires 6 open water dives instead of 8.

Upon completion you will be certified to use Nitrox mixes from 22 - 100% and helium mixes up to 20% on dives requiring staged decompression to a maximum operating depth (MOD) of 45 metres. For divers wishing to maximise their inwater safety and dive time, this combined course is a great option.

The TDI Helitrox Course combined with the TDI Advanced Nitrox course form the foundation of all other technical courses. After these two courses and some additional experience, the stage has been set for you to move onto additional technical levels.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old, be an SDI Advanced Open Water Diver (or equivalent) or TDI Intro-to-Tech, and have a minimum of 50 logged dives.
Duration:
  • 3-4 Days
Includes:
  • Learning materials (either eLearning or Decompression Procedures Diver manual) and a Certification Card. A Trimix Diver manual is available as an optional extra.
Cost:
  • £550.00
EXTENDED RANGE DIVER
Safely explore below 39m with air...
Certain areas of the world provide spectacular dives at depths deeper than 39m but you may not have access (or very limited access) to helium.

The TDI Extended Range Diver Course provides the training and experience necessary including proper techniques, equipment requirements, and hazards of deep air diving, to competently utilize air for dives up to 55m that require staged decompression, using nitrox mixtures or oxygen during decompression.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old and be a TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver (or equivalent) and have a minimum of 100 logged dives (of which 25 must be deeper than 30 metres).
Duration:
  • 4 Days
Includes:
  • Learning materials (either eLearning or Extended Range/Trimix manual) and a Certification Card
Cost:
  • £550.00 + instructor's gas at cost
Further Information:
TRIMIX DIVER
Go deeper with helium...
Are you looking to expand your depth range? Do you want to reduce narcosis during deep dives? The TDI Trimix Diver Course could be your next step!

As your motivation to explore progresses, you will find that you may want to go deeper to dive that wreck that is part of history or that cave system that you have read so much about. One of the major limiting factors of going deeper is narcosis; TDI’s Trimix Diver course shows how to minimise the effects of narcosis by adding helium to offset the nitrogen in your breathing gas.

You will learn how to plan and execute dives utilising as little as 18 percent oxygen and diving to maximum depth of 60m.
COURSE INFO
Prerequisites:
  • Minimum of 18 years old and be a TDI Advanced Nitrox Diver and TDI Decompression Procedures Diver (or equivalent) and have a minimum of 100 logged dives (of which 25 must be deeper than 30 metres).
Duration:
  • 4 Days
Includes:
  • Learning materials (either eLearning or Extended Range/Trimix manual) and a Certification Card
Cost:
  • £600.00 + instructor's gas at cost
Further Information:
DPV DIVER
Dive in the fast lane...
The purpose of the TDI Diver Propulsion Vehicle (DPV) Course is to familiarise divers with the skills, knowledge, planning, organisation, procedures, techniques, problems and hazards of using DPV’s while technical diving.

Upon successful completion of the TDI Diver Propulsion Vehicle Specialty training, the student will be able to: demonstrate comprehension of the practical knowledge necessary for DPV diving, properly plan and safely conduct DPV dives, and implement techniques and procedures to manage and minimize DPV diving hazards. This course is ideal for technical divers looking to extend their range and take advantage of the benefits of utilising a DPV on technical dives.

The TDI DPV course covers advantages of DPV options and use, rigging, parking, dive planning, care and maintenance and problem solving procedures such as malfunction or failure, towing and gas sharing with DPVs
COURSE INFO
Prerequisites:
  • Minimum of 18 years old (15 with parental consent) and be an SDI Open Water Diver (or equivalent) and have a minimum of 25 logged dives.
Duration:
  • 1 Day
Includes:
  • DPV manual and a Certification Card
Cost:
  • £170.00
Further Information: