NEBOSH National Diploma Exams

Your guide to sitting your NEBOSH Diploma exam with Horizon Risk Consultancy Ltd


The NEBOSH Diploma exam uses scenario-based questions, workplace activities, reflective tasks, and a short research project for DN1. DN2 and DN3 are assessed with a case study and scenario-based questions.

Each assessment is completed electronically and submitted through the NEBOSH exam portal. You’ll have between 2-4 weeks to complete your assessments from your exam date. 

You must pass all three units to achieve your full NEBOSH Diploma.          

Upcoming NEBOSH Exam Dates for Diploma Qualification Remember, you need to register for your NEBOSH Diploma exam at least 5 weeks before your chosen exam date.

Unit Release Date Submission Date
11 January 2023
8 February 2023
15 March 2023
28 April 2023
10 May 2023
8 June 2023
19 July 2023
2 August 2023
13 September 2023
11 October 2023
15 November 2023
15 November 2023
10 January 2024
24 January 2024
13 March 2024
12 April 2024
15 May 2024
30 May 2024
17 July 2024
31 July 2024
11 September 2024
9 October 2024
13 November 2024
27 November 2024

Unit DN1

The assessment is split into 2 papers with 4 sections for a total of 300 marks:

  • Scenario based questions
  • Workplace activities
  • Reflective Tasks
  • A short research project

You will have 4 weeks to complete the assignment and will need to submit it to the NEBOSH online portal before the deadline. It is recommended that you spend at least 40 hours in total on your assessment.

The assessment is worth 300 marks in total and you must achieve at least 50% to pass.

Unit DN2 and Unit DN3

These assessments are each worth 175 marks.

You will have 2 weeks to complete the assignment and will need to submit it to the NEBOSH online portal before the deadline. It is recommended that you spend at least 20 hours in total on your assessment.

These assessments are worth 175 marks in total.

How does the assessment process work?

NEBOSH will send login details for the NEBOSH assessment portal 2 weeks before your assessment start date. Theses will arrive by email directly from NEBOSH. From the portal, you can download your assessment paper and any supporting material straight to your computer to complete in your own time.

Assessment Start Date

On the start date of your assessment window, your assessment paper will be available to download from the NEBOSH portal from 12:00 noon (UK time). You will have a 4 week deadline for DN1 assessments, and a 2 week deadline for DN2 and DN3. The Closing time for submission is 12:00 noon (UK time) on your deadline date.

Submitting your NEBOSH Diploma Assessment

When you’re ready to submit your assessment, save your document with the file name format: [Last Name, first name, NEBOSH student number, Learning provider name].

You can submit your completed assessment on the NEBOSH portal by heading to the page where you downloaded your question paper and clicking ‘add submission’.

Closing Interviews

Learners will be required to attend a virtual closing interview in the form of a professional discussion with a NEBOSH representative. There will be a discussion following each assessment, and you will be given the chance to book a slot for this accordingly.

This will involve discussing your submission with a NEBOSH representative, verifying your identity and confirming the work as your own. The discussions will be approximately 45 minutes.

Your NEBOSH Diploma Results

You must pass all three assessments to achieve your full NEBOSH Diploma qualification. NEBOSH will email you your results within 50 working days after your submission date.

You’ll receive a hard copy certificate for each unit in the post, this can take up to 6-10 weeks after you receive your successful result. A final overall qualification parchment will be sent from NEBOSH around 6-10 weeks after passing your final unit.

Can I resit the exam if I fail?

If you need to resit any exam you can by paying the exam fee for the unit you need to resit  and then you can resit the exam.

    Your Details

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    Your Exam(s)

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