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NEBOSH International Diploma Units

The international equivalent of the NEBOSH National Diploma, this degree-level qualification is suited to people in or looking to progress to a senior health & safety role outside the UK. 
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Course overview

The NEBOSH International Diploma in Occupational Health and Safety is one of the most popular and highly valued degree-level qualifications for health and safety professionals in the UK and internationally.

The International Diploma increases candidates' ability to help organisations make sensible and proportionate decisions in managing risks. This supports their business objectives and regulatory requirements – delivering positive change in the modern workplace.

The NEBOSH Diploma covers the practical skills that are essential to health and safety professionals. We assess candidates’ ability to apply their knowledge in real-world settings and teach them how to deliver positive change in the workplace.

The NEBOSH International Diploma course is divided into four units, which can be studied individually or purchased in full, via distance learning.  

This page allows you to purchase units separately. To book the Diploma course in full, visit NEBOSH International Diploma.

Who is this course suitable for?

NEBOSH International Diploma is ideal for health and safety professionals wishing to advance their career outside the UK. This includes safety managers, advisors and consultants.

If you currently work or intend to base your career in the UK, the NEBOSH National Diploma may be more suitable.

There are no formal entry requirements for the NEBOSH International Diploma, however, we recommend first completing one of the following courses:

Course programme

The course is split into four separate units , three taught and one practical, each assessed separately:

Unit A: Managing Health and Safety.

Unit B: Hazardous Substances/Agents.

Unit C: Workplace and Work Equipment Safety.

Unit DNI: Application of health and safety in the workplace.

  • Unit DNI: This unit involves a workplace-based assessment that tests the practical application of knowledge gained in units A-C.

Learning outcomes

  • Effectively manage health and safety.
  • Understand key legal frameworks for health and safety, including the essential elements of health and safety systems.
  • Identifying and controlling risk associated with hazardous agents, workplace issues and equipment.
  • Management of workplace stress.
  • The importance of human factors in reducing incidents.
  • Support and develop your company’s health and safety culture.

When combined with further professional development, the NEBOSH Diploma meets the standards required to achieve Chartered Safety Practitioner (CMIOSH) status. 

On completion of the NEBOSH International Diploma, you will be entitled to use “DipNEBOSH” after your name and apply for Graduate Membership with the Institution of Occupational Safety and Health (GradIOSH). It also allows full membership to the International Institute of Risk and Safety Management (IIRSM).

Next steps

The NEBOSH International Diploma also acts as a stepping-stone to postgraduate study. Many universities accept a NEBOSH Diploma meeting their entry criteria for MSc-level courses, so it provides a clear route to masters-level postgraduate study.


Units A, B and C are tested in a written three-hour written examination for each unit. A separate unit certificate is awarded for each unit passed.

Exams are held at Phoenix Health and Safety venues in:

  • Birmingham
  • London
  • Manchester

We are also able to facilitate exams in major cities located all over the world at British Council venues, however please note that additional charges may apply for this service.

Exams need to be booked separately from the course – book NEBOSH exams here.

Unit DNI is assess by a 8,000-word workplace-based assessment that tests the practical application of knowledge gained in units A, B and C. The assessment for Unit D involves undertaking a full health and safety audit of a company of your choosing (ideally your own).

Payment plans

Payment Plans are offered to self-funding UK students only. We require 30% of the total course fee upfront. Payments will be made monthly from the day your deposit was made and must be received within 7 days of this date. The balance of your account must be cleared in full, prior to you registering for examinations. Payment plans can be paid by: Credit/debit card or bank transfer. If you would like to organise a payment plan please get in touch.


  • When and how will I receive my NEBOSH results?

    Results are notified by NEBOSH after completing the course. NEBOSH send out the results 10-12 weeks after the exams. Your certificates will arrive after the results have been announced.

  • When and how will I receive my NEBOSH certificate/diploma?

    Your certificate or diploma is sent to you by Phoenix after the results have been announced. Your certificates will arrive from Phoenix 10-12 weeks after the results have been announced.

  • What happens if I fail the NEBOSH assessment?

    The Phoenix Pass Pledge will cover your additional studies, but you retake the exams at your own cost. 
  • Are there any entry requirements for NEBOSH National or International Diploma?

    There is no formal entry requirement. However, achievement of the NEBOSH National General Certificate, or a direct equivalent (level 3), is highly recommended before undertaking the Diploma course. 

    An appropriate standard of English language is also essential for students to understand the syllabus and articulate the concepts it contains. NEBOSH recommends a minimum standard of English equivalent to an International English Language Testing System (IELTS) score of 7.0 or higher. 

Why choose a NEBOSH course with Phoenix?

  • Accredited Partner

    Phoenix Health and Safety is a NEBOSH Gold Partner. This accreditation means our NEBOSH course materials, tutors, and learning environments are all stamped with excellence.

  • Expertise

    We are one of the UK's leading providers of training in health and safety. 

    Our tutors and mentors are widely respected for their expertise, experience and ability to provide an enjoyable learning experience. 

  • Student support

    We go the extra mile to make sure our course attendees receive the best possible support, through study guides and student groups.

    Many candidates find our Facebook community group particularly helpful while they are studying, as it enables them to compare notes with fellow students and ask questions.

  • The Phoenix Pass Pledge

    Every Phoenix NEBOSH course entitles you to continue studying free of charge if you fail to meet the required standard in examinations. However, this is rarely necessary. Our pass rate for NEBOSH General Certificate training courses is above industry standard, with a high number of credits and distinctions.