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Sashless Window Company renews membership with SBD

The North Yorkshire-based Sashless Window Company has renewed its membership with Secured by Design, the official police security initiative.

A family owned and run business with over 50 years’ experience, Sashless Window Company manufactures, supplies and installs timber doors and windows to both the commercial and domestic sectors, on projects with high-end luxury housebuilders and developers, to public sector refurbishment schemes, to the education and health care sectors.

All Sashless products are manufactured from high-quality, FSC sourced timber from managed and accredited forests, where two trees are planted for every tree harvested. As a result, the company is proudly able to reduce CO2 emissions, demonstrating a commitment to sustainability and environmental impact.

The following Sashless products have achieved Secured by Design accreditation, representative of their high standards for security:


  • Grampian Security Timber Doorset Range
  • Grampian Security Timber Single Doorset Range


  • Cleveland Casement Timber Window Range
  • Richmond Vertical Sliding Sash Timber Window Range
  • Sutton Flush Casement Timber Window Range

James Clark, a Director at Sashless Windows, said: “The SBD programme provides demanding, real-world testing for the security of our windows and doors. Years of experience and rigorous product selection combined with our manufacturing expertise produce an unrivalled product offering.”

Alfie Hosker, Secured by Design, said: “Sashless produce a lovely range of timber doors and windows, fabricated to a high standard and designed and certified to a Police Preferred Specification. This is supported by their products undergoing robust performance testing and certification, which includes protection against the elements and daily use. I am delighted that they have renewed with us once again, being members of the Secured by Design UK Police Service Crime Prevention Initiative, since 2010.”

You can find out more about Sashless Window Company and their Secured by Design accredited products on their dedicated member page.

Secured by Design (SBD) is owned by the UK Police Service with the specific aim of reducing crime and increasing safety for businesses and individuals.

SBD seeks to improve the physical security of buildings and the surrounding area using products such as doors, windows, locks and walling systems along with fencing systems that meet the SBD Police Preferred Specification security requirements.

SBD have many partner organisations, ranging from the Department for Levelling Up, Housing and Communities through to local authorities, housing associations, developers and manufacturers and work closely with standards and certification bodies.

SBD is the only way for companies to obtain police recognition for security-related products in the UK, through the Police Preferred Specification - a product-based accreditation scheme developed over 20 years ago, which provides a recognised standard for all security products that effectively deter and reduce crime. SBD work with manufacturers and standards authorities to ensure that security standards are current and updated to keep pace with emerging crime trends.

Learn more about Secured by Design and our member companies at: