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With over 3500 members globally, the Society of Light and Lighting is recognised as an authority on lighting and welcomes all who are interested in any aspect of the world of light, lighting, and its design or application. SLL is a learned Society, promoting education and knowledge transfer in a variety of ways, including seminars and an events programme which runs all year round. 

SLL AGM 2019. Photo: Michael Eleftheriades
SLL AGM, Awards & Presidential Address 2019, St Martin in the Field. Photo: Michael Eleftheriades

Lighting designers, consulting engineers, researchers, students, academics, manufacturers, sales staff and many more all contribute to and are members of the SLL.

Find out more about membership renewals for 2021 and how to pay

The Society offers different grades of membership, depending on lighting knowledge and experience. These include:

Existing members of the Society may also wish to upgrade their membership, ensuring that they are receiving the professional recognition that they deserve. Find out more about upgrading your SLL Membership.

All members receive the benefits of membership of the Chartered Institution of Building Services Engineers plus:

  • Unlimited online access to all SLL and CIBSE Publications, including the SLL Lighting Guides, the SLL Handbook and the SLL Code for Lighting, with reduced rates for purchasing hard copies of publications
  • Free online access to the internationally recognsed, Lighting Research & Technology journal
  • With suitable qualifications and experience, you have the right to use the post-nominal AMSLL (Associate Member), MSLL (Member) and FSLL (Fellow)
  • Membership gives professional recognition amongst your peers and employers
  • Subscription to the Society's bi-monthly magazine, SLL Light Lines, along with the CIBSE Journal
  • Receive prior notification and reduced rates for all SLL events
  • Receive a discounted rate to purchase CIE publications and to attend CIE-UK events (UK only)
  • Company membership is also available for design practices and manufacturers through the Sustaining Member and Sponsors in Partnership Schemes.
  • NEW! Free access to CIE 227: 2017 Lighting for Older People and People with Visual Impairment in Buildings on request. If you are an existing member and would like to access this CIE publication for free, please email (UK only)
​Members of the Institution, in all grades, are required to maintain the highest standards of professional conduct. All members must order their conduct in accordance with this Code. Click here to view the CIBSE Code of Conduct.