It is an exciting time to be in lighting, and it is important you are professionally competent.

Lighting is a tool to help citizens live happier and healthier lives, and the ILP can help you gain the skills and knowledge to do this safely and effectively. Designers, engineers, contractors and consultants all have a part to play in delivering quality lighting which improves our environments and helps our communities.

The lighting industry has relied upon the Institution of Lighting Professionals to deliver training and help build competence for many years. The ILP Exterior Lighting Diploma is the established industry qualification for exterior lighting professionals, meaning you can have confidence that this training will be helpful and worthwhile for you.

In 2018, our team of expert trainers reshaped the modules to reflect the needs of the exterior lighting community across the world. Attend the ILP Exterior Lighting Diploma and you will find yourself better equipped to fulfil your role, as well as enjoying an interesting, lively and valuable course!


I am very pleased with the result I gained, I’ve been pushing myself to progress my career, I will indeed remain part of the ILP, I can’t fault any part of it, every step of the way I have had fantastic guidance and have met and made many new contacts, whether it be students or tutors, many of whom I remain in good contact with.

Wayne Shardelow, Design Engineer-Lighting, Balfour Beatty Living Places

How the Course is Run

The ILP Exterior Lighting Diploma is made up of three five-day residential modules held in the centre of the UK.

After completing all three modules you will work independently on your ELD Completion Project. This will be assessed and all successful students are then awarded the ILP Exterior Lighting Diploma.

The course is managed by the Institution of Lighting Professionals who are on hand to provide support and advice at every stage.

Comprehensive joining instructions and a learning agreement will be sent before your start date. We will send you general guidance notes to download so you can be fully prepared.

Modules A, B and C are fully residential. Your accommodation and meals at the hotel will be reserved for you and the cost is included in the course fee. The programme is intensive with tutorial sessions starting at around 9am and continuing throughout the day and into the evening. Each Module runs from Monday to Friday and students are welcome and encouraged to arrive on the Sunday before the Module starts, to settle in and meet other students.

What You Will Learn

Module A

This week, we take you through illuminance based highway lighting design. You will be grouped into a team with other students to learn from each other as well as our professionally qualified tutors. The module includes a site visit and group project.

  • What is light and how is it produced?
  • Eye, vision and colour
  • Light measurement units and calculation process
  • Intensity distribution
  • Exterior luminaire construction
  • Exterior luminaire design
  • Control gear including power supplies
  • Light sources – lamps and LEDs
  • Introduction to British Standard 5489, the code of practice for the design of road lighting and public amenity areas
  • Residential area street lighting design
  • Understanding scotopic, photopic and mesopic vision and SP ratios
  • Obtrusive light including light pollution
  • Road lighting design software introduction: Lighting Reality
  • CAD and area lighting
  • Fundamental electrics for highway lighting
  • High mast lighting
  • Best practice installations

Module B

The second week of the Exterior Lighting Diploma explains luminance based highway lighting design. You will study alongside your peers in a friendly team and enjoy a site visit and group project.

  • Column design and maintenance
  • LEDs
  • Seeing and driving
  • Road lighting theory
  • Traffic route lighting design
  • Passive safety
  • Bridges and elevated roads
  • Motorway lighting design
  • Asset management and life cycle planning of lighting supports, including ILP Guidance Note 22
  • Tunnel lighting design and portal calculations
  • Conflict areas on the highway, including ILP Professional Lighting Guide 02
  • Road lighting design software introduction: Lighting Reality
  • Central Management Systems (CMS), smart cities, Internet of Things and communications for lighting
  • Variable lighting including dimming, trimming and part night
  • Energy management
  • Light measurements using an indicative grid method, including ILP Technical Report 28

    Module C

    The final week of the Exterior Lighting Diploma teaches you about specialist architectural, amenity and public realm lighting design, reports and strategies. It includes a site visit, practical session in floodlighting trials and team project.

    • Area lighting including car parks, amateur sports pitches and MUGAs
    • Flood lighting examples
    • Decorative and amenity lighting
    • Town centre case study
    • Planning and conservation
    • Developing lighting strategies for public realm
    • Environmental lighting impact assessments, including ILP Professional Lighting Guide 04
    • Understanding daylighting
    • Developing a lighting policy/ specification
    • Maintenance by design
    • Night trial planning and set up
    • Controlling light distribution
    • Floodlighting – practical trials
    • Construction Design and Management Regulations 2015 and the role of the lighting designer
    • Lighting design risk assessments

    **This module can be taken as a single unit to achieve the Public Realm Lighting Certificate.** 

    Where & When


    The tutors were amazing and made it totally relatable to remember everything they taught us.

    Laura McDowell, Lancashire County Council

    Exterior Lighting Diploma – Module C Spring 2024

    It is an exciting time to be in lighting, and it is important you are professionally competent. It is an exciting time to be in lighting, and it is important you […]

    Find out more »
    £1,855.00 - £2,600.00


    The ILP Exterior Lighting Diploma is held at:

    The Draycote Hotel, London Road, Thurlaston, Nr Rugby, Warwickshire, CV23 9LF

    Getting There

    By air: the nearest airport is Birmingham International, around 30 miles away. Regular trains run from Birmingham International to Rugby Railway Station.

    By rail: the nearest railway station is Rugby, around 6 miles away. There is a taxi rank at the railway station.

    By road: the hotel is easy to find using this map. There is free parking onsite.


    The cost of each module includes all accommodation, meals, and refreshments (excl. room service/bar) during your attendance.

    Member: £1855 Plus VAT
    Non Member: £2600 plus VAT

    Please visit our membership page for more information about becoming a member of the ILP.

    The Diploma programme is set, managed and awarded by the Institution of Lighting Professionals. For more information please contact Ange Davies on +44 1788 576492 or


    Completion Project

    To complete your ILP Exterior Lighting Diploma, you will be set a Completion Project

    The Completion Project can be worked on between each module. Information and guidance notes are distributed and students have ample time to discuss these with a tutor. Ongoing tutorial support and encouragement is provided via telephone, MS Teams and email for students working on their Completion Project. This can be in a group session or one to one. Please contact us for more information.

    The project is assessed and all successful students are then awarded the ILP Exterior Lighting Diploma. You can submit your project at any time and we aim to mark your project in 4-6 weeks of submission.

    Further information including the requirements of the project can be found in the documents below.

    Submission of Completion Projects can be electronically or by hard copy. Please email to arrange.

    Please post your project to:

    Ange Davies, ILP, Regent House, Regent Place, Rugby, Warwickshire CV21 2PN, who will confirm safe receipt.

    Completion Project Support

    Completion project support sessions are now available on request, as an online live session.

    Sessions can:

    • Aid students who are struggling to begin their ELD Completion Project/Module 4
    • Assist anyone part way through who is finding it a challenge to complete their project
    • Enable you or your employee to finish and be awarded the ILP Exterior Lighting Diploma

    Why you should finish your completion project:

    • Attending the three residential ELD modules doesn’t mean you have achieved the ILP Exterior Lighting Diploma
    • No project = no certificate, so finish your studies and prove your worth to employers and recruiters
    • Holding the ILP Exterior Lighting Diploma can demonstrate competency for you, your staff, your organisation

    The requirement to hold the full ILP exterior lighting diploma may be included in:

    • Employment contracts
    • Contracts for service delivery

    Who benefits from finishing the ILP exterior lighting diploma?

    • Local authorities
    • Consultants
    • Sub-consultants
    • Contractors
    • Highway lighting engineers
    • Designers
    • Exterior public realm specialists


      Completion Project Support sessions are held online, on request. Please email for more information.

      Who Can Attend

      Anyone who has completed the three residential modules, from 2013 onwards.

      If you would like support and you studied on the ILP Exterior Lighting Diploma earlier than 2013, please get in touch for details of how we can help you.

      The ILP seeks to be as inclusive as possible, so if you have any concerns about applying for membership / attending our Exterior Lighting Diploma courses, LDC local events or our one-day courses for whatever reason please let us know and we will try to make reasonable adjustments to ensure that you can fully engage with the ILP.