The Safety Letterbox Company

British-made solutions engineered for every development, built on 40 years of innovation.

For 40 years we have been supplying both the residential and commercial sectors with a versatile range of Secure Information Boxes (SIB), mailboxes and Parcel boxes for virtually any application, location and budget.

With a comprehensive range of over 180 models of SIB, mail and parcel boxes that include Secure Information Boxes (SIB) that conform to STS 205 BR2, Fire Rated Mail & Parcelboxes, Fully Bespoke Mailboxes and models that ensure we are conforming to TS009:2019 Secured by Design standards, you can be sure we can support your requirements.

We also offer a fully bespoke solution; turning your vision into reality – working with you to understand the profile of a project and creating the best solution to sit within your brief.

We are fully committed to our values of quality, sustainability and safety and invest in these areas to ensure we are a responsible and reliable employer and a loyal and ethical company to deal with.

In 2026, during our milestone 40th anniversary year, SLB was honoured to receive the prestigious King’s Award for Enterprise for Innovation — one of the highest official accolades a UK business can achieve.

The award recognises our pioneering work in the development of our fire-rated mail and parcel solutions, designed to help improve fire safety and compliance within modern residential buildings. Receiving this recognition in our 40th year marks a proud moment in our journey and reflects our continued commitment to innovation, safety and British manufacturing excellence.

We work with architects, developers and buyers worldwide and find distance no problem having had much experience in export and working on complex projects internationally. No project is too large or small as we offer total flexibility as a reliable and capable manufacturer.

The future of mail and parcel delivery is evolving; ensuring efficiency, longevity and durability, being environmentally aware and offering smart intelligent solutions.

Today, SLB continues to lead the industry with future-ready solutions that set the benchmark for quality, compliance and security — proudly made in Britain and trusted across every development sector.