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NEBOSH National Diploma Units

Focusing on practical health & safety management, the Diploma provides training on controlling workplace risks. Includes three taught units and one practical, work-based unit.  
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Course overview

The NEBOSH National 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.

Over 18,000 people have passed the NEBOSH Diploma since it was first introduced in 1980. Considered the gold standard of health and safety qualifications, it is the highest-level training NEBOSH offers.

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

By studying units individually, students can spread the cost of the NEBOSH Diploma Qualification, and study at their own pace.

Classroom Courses & Covid

We continue to operate classroom courses safely throughout the UK, working with our venues to ensure they adhere to strict Covid-secure measures. We use larger training rooms to enable social distancing, follow government guidelines on hand sanitising, facemask wearing and no longer allow a buffet style food service. A copy of our Covid Classroom Risk Assessment is available on request.

Who is this course suitable for?

The Phoenix NEBOSH Diploma course is ideal for health and safety professionals wishing to advance their career. This includes safety managers, advisors and consultants.

A degree-level qualification can also increase promotion prospects and earning potential.

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

Course programme

These units can be completed in any order over a period of 5 years, and each unit is individually assessed by a written 3 hour exam and certificates given for each unit.

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.

  • Application of health and safety in the workplace This unit involves a workplace-based assessment that tests the practical application of knowledge gained in units A-C.

Course Dates

There are two classroom courses for the Diploma in 2021, each comprised of 7 weeks of tuition:

Course 1

Unit A Week 1: 15 - 19 February
Unit A Week 2: 8 - 12 March
Unit A Week 3: 22 - 26 March

Unit B Week 1: 12-16 April
Unit B Week 2: 10-14 May

Unit C Week 1: 7-11 June
Unit C Week 2: 28 June - 2 July

Course 2

Unit A Week 1: 23-27 August
Unit A Week 2: 13-17 September
Unit A Week 3: 4-8 October

Unit B Week 1: 25-29 October
Unit B Week 2: 8-12 November

Unit C Week 1: 22-26 November
Unit C Week 2: 6-10 December

Please note that when you book a course below, only the initial start date is shown.

Learning outcomes

  • Effectively manage health and safety.
  • Understand key UK 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. It builds directly on the knowledge gained in the NEBOSH National General Certificate and the NEBOSH National Construction Certificate.

On completion of the NEBOSH National 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 Diploma also acts as a stepping-stone to postgraduate study. Many UK universities accept the 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

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

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.

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.


View all FAQs
  • 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

  • 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. 
  • 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.

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 average, with a high number of credits and distinctions.