NEBOSH National Diploma For Occupational Health and Safety Professionals

Highly sought after by many organisations, the NEBOSH National Diploma in Health and Safety trains delegates to competently apply key legislation and health and safety practices to the work environment.

Since its introduction in 1980, it has become the most popular qualification of its kind with over 18,000 students having successfully gained the Diploma and is the first UK vocational qualification to be developed specifically for health and safety professionals. A brand new syllabus and format for this qualification was launched in 2021, with new style updated assessments as from July 2023.

The course provides an in-depth understanding of occupational health and safety. It covers a the additional management skills along with in-depth reviews of risk management techniques, human factors along with workplace health issues and key safety risks. These skills can be applied to a range of sectors including healthcare, construction and facilities management.

Our DN3 2023 classroom course achieved a 80% pass rate, exceeding the national pass rate!

Course Information

What does the course cover?

The updated 2023 version of the qualification consists of three units : DN1 Managing Health and Safety, DN2 Workplace Health Hazards, DN3 Workplace Safety.

  • DN1: Managing Health and Safety
    The qualification deliberately looks at general workplace issues so that it can be applied in many different sectors in which health and safety professionals may work. On completion of the qualification, your learners will be able to:

    • Understand how health and safety legislation is applied in a workplace and the possible enforcement actions that could be take for non-compliance and how they contribute to health and safety legislation.
    • Use different types of health and safety leadership approaches and be able to influence health and safety issues at all levels.
    • Influence organisational health and safety workplace culture.
    • Proactively manage health and safety, taking account of human failures and factors.
    • Manage health and safety competence (both their own and that of the organisation).
    • Use a range of hazard identification, risk management and loss causation techniques.
    • Monitor health and safety performance.
    • Develop their role as a health and safety professional including understanding how it links with Corporate Social Responsibility.
    • Effectively manage organisational change.
    • Manage contractors and supply chains
  • Assessed via one workplace assignment which will need approximately 40 hours of work to complete over a 4 week period.
  • DN2 – Workplace Health and Wellbeing
    Delegates will be able to control a range of workplace health and well-being issues. Including

    • Substances & Chemicals – Risk Assessment
    • Substances & Chemicals – Engineering Controls & PPE
    • Monitoring & Measuring hazardous agents
    • Biological Agents
    • Noise & Vibration
    • Radiation
    • Psychosocial Agents including mental ill health
    • Musculoskeletal Risks & Controls
    • Work Environment Risks & Controls
  • This unit is assessed by a workplace case study which is undertaken over a 2 week period and will require up to 20 hours of work outside of tutorials.
  • DN3 Workplace Safety
    Delegates will be able to control a range of workplace safety issues, including:

    • Fire
    • Explosions
    • Confined spaces
    • Storage, Handling & Processing of Dangerous Subs
    • Work Equipment & Workplace Machinery
    • Lifting equipment
    • Electrical Safety & Electricity at Work Regulations 1989
    • Construction Hazards & Controls
    • Workplace Transport & Driving for Work
  • This unit is assessed by a workplace case study which is undertaken over a 2 week period and will require up to 20 hours of work outside of tutorials.

Who is the course suitable for?

Health and safety practitioners, advisers and officers who wish to develop their knowledge and skills. It is also suitable for those whose roles involve Health and Safety as an integral part of their job/profession and for those with overall responsibilities for Health and Safety within any multifaceted business e.g:

  • Estates and Facilities Management
  • Construction
  • Healthcare

The Diploma is a level 6 course and requires delegates to have the underpinning formal knowledge of health and safety before commencing study, delegates must have either completed the Nebosh Certificate or a similar level three H&S qualification to be eligible for this programme.  If you have not studied with Cambridge Safety previously you will be required to show evidence of your level 3 qualification.

Successful completion of this programme can enable delegates to progress to Chartered Membership of IOSH (CMIOSH) and full membership of the International Institute of Risk and Safety Management (MIIRSM). In addition, you can also choose to enrol with the Occupational Safety and Health Consultants Register (OSHCR).

Delegates are required to enrol with a training centre to study this accredited programme. 

For further information please take a look at the Nebosh Learner Guide.

DN learner guide

Our modern study centre is based in Peterborough at the following address: 10 Swan Court, Forder Way, Cygnet Park, Hampton, Peterborough PE7 8GX

Study Your Way

Want to visit our dedicated training facility? Or perhaps you’d feel more comfortable studying remotely? The choice is yours at Cambridge Safety, with two different study options available to suit you.


  • Next unit starts 2nd September 2024
  • Full Course Price £6532 inc vat and Nebosh fees
  • Day Release
  • The classroom course is 3 units with a total of 30 tutorial days, plus 11 days to work towards the three course assessments.
  • Based in Peterborough

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Distance Learning

  • Start anytime
  • Study at your own pace with a set of hard copy study materials
  • 3 year tutor support
  • Access to extensive video and podcasts
  • Full package £2932 inc vat & Nebosh Fees

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Why Choose Us?

Based in the city of Peterborough - within easy reach of surrounding cities like London - Cambridge Safety is a leading provider of NEBOSH and IOSH training courses.

Catering for teams and individuals of all levels of knowledge, our courses cover all aspects of health and safety, from fire to environmental responsibility. You can study your way, with flexible training arrangements to suit you. Whichever learning approach you choose, our well above-average pass rates mean you’re in safe hands.

  • Friendly, family-run business since 1998
  • Highly qualified and experienced tutors
  • Proven track record, with pass rates for NEBOSH courses well above the national average
  • NEBOSH Gold Learning Partners
  • Courses can be tailored to suit your company’s precise requirements
  • Fully kitted out, purpose-built training centre available for use
Learn More About Us
NEBOSH Gold Partners

We have been running this highly successful programme for more than 20 years with pass rates for all three units consistently exceeding the national average. We’ll not only help you pass with flying colours, we’ll also ensure you gain an in-depth understanding of your chosen subject and help you apply your knowledge and skills to the workplace.

A Gold Partner is recognised for providing delegates with an outstanding learning experience with teaching practices that inspire, engage and encourage a deeper level of study.

If you’re passionate about making a positive difference in the workplace and preventing health and safety issues, this course will place you with like-minded students and tutors who value high standards.

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Related Courses

What to do next? Explore Environmental Management and don't forget to keep up to date with your CPD!

NEBOSH Environmental Management Certificate

As well as protecting the environment and demonstrating social responsibility, this course will also help your organisation avoid prosecution, litigation or loss of reputation from environmental mismanagement.

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NEBOSH HSE Introduction to Incident Investigation

Refresh your knowledge on Incident Investigation with this one day course, the ability to conduct a thorough and effective incident investigation is an essential tool for all Health and Safety professionals.

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NEBOSH HSE Certificate in Managing Stress at Work

This one day course helps delegates to identify and reduce workplace stressors to achieve a healthier and happier workforce.

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Frequently Asked Questions

You can read all of our FAQs for this course and more on our dedicated FAQs page.

How long does the NEBOSH Diploma in Occupational Health and Safety take to complete?

NEBOSH recommends a minimum of 191 taught hours and approximately 144 hours of private study to successfully complete the study, with an additional 140 hours to complete the course assessments. You will need to complete the course within five years of your enrolment.

Is the NEBOSH National Diploma For Health and Safety Professionals suitable for beginners?

No, delegates must have already completed the Nebosh General Certificate or an equivalent NVQ level three course as you are expected to have the underpinning knowledge to study for the Diploma.

Can I complete the NEBOSH Diploma in Health and Safety Online?

We currently do not offer this course online. However, we do offer distance learning options and classroom based sessions.

Need help? Call us direct on 01733 865 695

Alternatively, click here to fill in our contact form.



An informative and interesting course, I have learned a lot and enjoyed the classroom activities. All trainers were great, helpful, enthusiastic, informative and friendly.


Richard was very informative amazing tutor for us to learn from, he was very inspiring!


Good and relevant information, Gary is an experienced and knowledgeable instructor.


An excellent course as always, I’m going to do the Environmental Diploma next


A brilliant course, Jackie is a great tutor able to gain attention and share her knowledge


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