Online, Virtual and Classroom Courses
Fully Certified NEBOSH, IOSH, ISEP Accredited
7-Day Customer Service
Lorna Bleyswyck CMIOSH, PGCE

Smooth Transitions - From NEBOSH Diploma Unit D/ID to DNI

March 2017

This post is intended to benefit those currently studying the NEBOSH National or International Diploma in Occupational  Health and Safety, its' purpose being to clarify the situation with the staged transition from the ‘old’ Unit D/ID assignment to the new’ Unit DNI assignment, ‘Application of Health and Safety Management in the Workplace’.

The Unit D format has changed in line with the requirements of the revised (November 2015) NEBOSH National and International Diploma's specification syllabus following extensive research with past and present students, employers and NEBOSH’s accredited course providers as part of its normal development cycle.

Key changes include, for example, a new element called ‘The Role of the Health and Safety Practitioner’ (A11 or IA9), which will only be assessed by Unit DNI - although the content for sits within Unit A/IA. The DNI (Unit D for the National and International Diplomas) will now be common to both the National and International Diploma in Occupational Health and Safety courses and must be submitted electronically.

What does this mean for me as a learner?

The purpose of the DNI assignment (to be undertaken after completing units A-C/IA-IC), is to assess the practical application of knowledge and understanding in a vocational setting through a structured review of the management arrangements for health and safety within an organisation, with the aim of producing justified, proportionate recommendations for improvement.

Key dates:

  • All learners who started their studies after September 2016 are required to submit a Unit DNI assignment.
  • Learners who started their studies before September 2016, on the ‘old’ 2010 syllabus, can still submit a Unit D/ID assignment until November 2017. If necessary, they can resubmit Unit D/ID until August 2018. However, these learners may also now choose to submit a Unit DNI assignment instead of the D/ID.
  • The first submission date for Unit DNI was February 2017.

N.B. After November 2017, all Diploma and International Diploma learners must submit a Unit DNI assignment.

The changes summarised

Procedural changes

  1. Electronic submission directly to NEBOSH (BUT you still have to register to submit via your course provider in advance of submission deadlines set by NEBOSH)
  2. New anti-plagiarism software will be used on all DNI submissions
  3. No need for your course providers to sign an assignment log
  4. Your student number should be included on every page.

Content changes

Unit D/IDUnit DNI
Unit D/ID required you to carry out a detailed review of a company’s health and safety performance.  You were required to produce a justified action plan to improve performance.The new Unit DNI requires you to carry out a review of the arrangements for managing health and safety in a workplace and to produce justified, proportionate recommendations to improve health and safety performance.  You will also be required to demonstrate your understanding of the role of a health and safety practitioner and demonstrate how you respond to risk in a proportionate way within the Assignment.

The sections of the assignment compare as follows:

Introduction
An introduction which states:
  • aims and objectives
  • description of the chosen workplace
  • description of the legal framework within which the workplace operates
  • outline of the methodology used to undertake the assignment

Worth up to 10 marks

An introduction which states:
  • the aims and objectives
  • description and methodology used to undertake the assignment.

The introduction should include a description of the chosen workplace and the role of the health and safety practitioner to set a context for the assignment.

Worth up to 5 marks

 Discussion (Main body)
An overview of the current H&S management system arrangements and a critical review (gap analysis) of the existing H&S management system against a recognised standard (usually HSG65 or OHSAS 18001).

Worth up to 12 marks

A review and critical analysis of how health and safety is currently managed by the organisation in which the student must review the following specific elements:
  • Leadership
  • Management
  • Worker Involvement
  • Competence
  • Compliance
  • Risk Profile

For more detail on what to include in each element you should read Section 12 of the NEBOSH guidance.

Worth up to 40 marks

A survey of a wide range of significant hazards or activities, for both physical and health and welfare hazards.

Worth up to 16 marks

 

A detailed risk assessment for one physical hazard/activity and one health and welfare hazard/activity including an evaluation of the effectiveness of the organisations existing control measures and proposals for further controlling risks.

Worth up to 20 marks (10 per risk assessment)

An evaluation to identify the top three priorities where improvements should be made.

On completion of the review and critical analysis, information about the current arrangements should be evaluated to determine the top three improvements that would make the most impact on improving health and safety performance at the organisation. The improvements can be selected from any of the elements and students can select all three improvements from one element or any combination of elements. The choice must be justified on the basis of the critical analysis. These issues must be those that have the largest impact if addressed by the organisation.

Worth up to 30 marks

ConclusionConclusions and Recommendations
Conclusions which summarised the main issues

Worth up to 6 marks

Conclusions that summarise the main issues identified, which lead to justified proportionate recommendations based on the outcome of the review.

Worth up to 10 marks

Recommendations
Recommendations for improvement; following this you were required to produce two costed and prioritised action plans, one for improvements to the H&S management system and one for improvements to be made following the risk assessments.

Worth up to 6 marks 

Action plans
Two action plans - one for the H&S management system and one for the risk assessments.

Worth up to 12 marks 

Not required
Executive summary
A single page summary of the main problems and recommended solutions with a business argument. Written last, presented first.

Worth up to 10 marks

A single page summary of the main problems and recommended solutions with a business argument. Written last, presented first.

Worth up to 10 marks

References and Bibliography
References – a properly formatted (Harvard or Vancouver) list of sources cited within the report.

Bibliography – a properly formatted (Harvard or Vancouver) list of sources that have informed the content of the report but not been directly referenced (reading list).

Marks available within presentation (below)

References – a properly formatted (Harvard or Vancouver) list of sources cited within the report.

Bibliography – a properly formatted (Harvard or Vancouver) list of sources that have informed the content of the report but not been directly referenced (reading list).

Marks available within presentation (below)

Appendices
To be used sparingly

Not marked

To be used sparingly

Not marked

Presentation
Up to 8 marks available for planning and presentationUp to 5 marks available for focus and presentation

Additional resources, guides and information can all be found on the NEBOSH website.

Related Blogs

  • New Law Makes Employers Liable for Third-Party Harassment from October 2026 Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    New Law Makes Employers Liable for Third-Party Harassment from October 2026

    From 30 October 2026, employers can be liable for harassment of staff by customers and clients. Brenig Moore explains the change and the reasonable steps to take now.
    15.09.26
  • 10 Most Common Oil and Gas Risks and How to Control Them Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    10 Most Common Oil and Gas Risks and How to Control Them

    Discover the 10 most critical oil and gas industry risks and proven control strategies from HSE expert Brenig Moore. Essential guide for safety pros.
    15.09.26
  • Europe Moves to Make Workplace Burnout an Employer's Legal Duty Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    Europe Moves to Make Workplace Burnout an Employer's Legal Duty

    Europe wants binding law on workplace stress and burnout. Brenig Moore explains why psychosocial risk is already a legal duty for UK employers — and how to manage it.
    08.09.26
  • 25 Fire Engines for One “Small” Building | What Industrial Fires Really Cost Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    25 Fire Engines for One “Small” Building | What Industrial Fires Really Cost

    One “small” building, 20-plus fire engines and a ten-day operation. Brenig Moore on the real cost of industrial fires — and the duty-of-care gap behind them.
    25.08.26
  • How Does the Astutis Workplace Safety Suite Help Businesses Scale Workforce Training? Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    How Does the Astutis Workplace Safety Suite Help Businesses Scale Workforce Training?

    Read how the Astutis Workplace Safety Suite scales workforce training: standardised content, flexible deployment, centralised oversight and a library that grows with you.
    24.08.26
  • Who Is the Astutis Workplace Safety Suite For? Image
    Brenig Moore DipNEBOSH, CMIOSH, CEnvH

    Who Is the Astutis Workplace Safety Suite For?

    Discover who the Astutis Workplace Safety Suite is built for, which sectors and roles get the most from it, and who is better served buying individual courses instead.
    20.08.26
Section Curve
Case Studies

Real Life Stories

Find out how learners look back on their training with Astutis. Our case studies give our learners, both individual and corporate, a platform to share their Astutis experience. Discover how training with Astutis has helped past learners and delegates make the world a safer place, one course at a time.
More Image
Bottom Curve
What People Say

Hear What Our Learners Have To Say

We're always there for our customers. 98% of our learners rated their overall experience as good or outstanding. We will always pride ourselves on our customer service. But don’t take our word for it, here is what our customers have to say
  • "Service was good , on the odd occasion I needed support was able to use the chat service or email service team and issues very quickly resolved. Also easy to place order using SAP process order number via my company purchasing system."

    Mark
    09.09.2026
  • "The course was very well presented , the learning portal very intuitive and material thorough and relevant to the syllabus. As I studied self led via distance learning this was important to me. The progress tools enabled me to stay on track with my target assessment dates and booking of the module assessments themselves was very straightforward and efficient. As such I'd recommend Astutis to others having completed both general certificate and diploma with them. Thanks Astutis!"

    Mark
    09.09.2026
  • "The team were always punctual in response when needed."

    Martin
    09.09.2026
  • "The Course was well structured and materials were easy to access. I'm old scholl and previously opnly attended classroom courses, however I found the structure of the online portal was easy to seperate into "bite-size" chunks to achieve the balance between working and learning simultaeneously."

    Martin
    09.09.2026
  • "Astutis were recommended to me by a health and safety manager so booked NEBOSH general certificate with them, and they are a really good training provider. The course materials are well laid out and there is plenty of help and support. Really can't fault them."

    Peter
    25.08.2026
  • "The NEBOSH general certificate is a difficult course and the hours have to be put in to pass. There is no short cut. The course materials from Astutis are really good and as well as that there are videos available that help you to prepare, my advice, listen to the course and watch the videos over and over until it is engrained into you."

    Peter
    25.08.2026
  • "Excellent service and a great learning experience. The course content was clear and well-structured, and the support provided throughout the learning journey was very helpful. I would highly recommend Astutis."

    Ghadeer
    13.08.2026
  • "The course was well-structured, informative, and easy to follow. I found the content very useful and relevant to my professional development."

    Ghadeer
    13.08.2026
  • "Very good service the tutor was very good."

    06.08.2026
  • "Very good"

    06.08.2026