Society of Light and Lighting (SLL)

Join SLL

The Society of Light and Lighting (SLL) welcomes all who are interested in any aspect of light, lighting, and its applications.

With over 3300 members globally, the Society of Light and Lighting (SLL) 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. Lighting designers, consulting engineers, researchers, students, academics, manufacturers, sales staff and many more all contribute to and are members of the SLL.

Contact us

If you would like to contact SLL regarding membership, publications, or events, or you are interested in the opportunity of joining one of the SLL committees please email SLL.

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Your CIBSE membership powers your SLL journey - renew to stay inspired, informed, and recognised in lighting excellence.

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About

Our people including Area Reps, Committees, Council, Executive Board and our History.

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Join

Benefits of SLL membership, how to join or upgrade your existing membership.

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What's Happening

Latest SLL news and upcoming events, webinars and seminars.

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Get Involved

How to volunteer and support the SLL as individuals or as a business.

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Knowledge & Resources

Lighting Guides, Light Lines magazine, past Webinars, Fact Files and the Lighting Research & Technology (LR&T) Journal.

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Learning & Development

How to develop your career, available lighting courses and related training.

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Latest SLL News

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Article category: News
Published on: 03 Mar 26

New lighting factfile published on thermoplastic diffusers and fire safety by Society of Light and Lighting

Lighting Factfile LF12 (2026) provides updated guidance on the use of thermoplastic lighting diffusers in relation to fire safety regulations across the UK. Produced by the CIBSE Society of Light and Lighting, the free publication clarifies regulatory requirements and their implications for luminaire specification and compliance.

Article category: News
Published on: 16 Feb 26

SLL Young Lighter - Applications Open for 2026

Applications are now open to apply to be the SLL's Young Lighter 2026.

Article category: News
Published on: 03 Feb 26

New Lighting Guide - LG23, Design, Creativity and Compliance

The Society of Light and Lighting (SLL) has launched Lighting Guide LG23: Design, Creativity and Compliance. This new guide is a departure from previous SLL publications because it focuses specifically on creative architectural lighting design rather than a narrow aspect of lighting or a specific space type.