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South Kensington London Mews

The Barnsbury Group

Heritage Joinery & Sash Window Specialists

 

Who Are The Barnsbury Group?

The Barnsbury Group is a specialist group of companies focused on heritage joinery, timber sash windows, restoration and conservation-led craftsmanship. The group brings together expert manufacturers, restorers and consultants working across London, the UK and Northern Ireland.

Created to protect and preserve traditional windows, The Barnsbury Group ensures historic and period properties receive the correct approach—whether that means repair, restoration, bespoke manufacture or professional heritage advice.

 

What The Barnsbury Group Specialises In

Across all companies, the group specialises in:

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  • Traditional timber sash and casement windows

  • Historic and period property joinery

  • Conservation area and listed building projects

  • Repair-first, sustainability-led solutions

  • Bespoke manufacturing and heritage restoration

 

This structure allows clients to work with the right specialist, while benefiting from shared standards, experience and craftsmanship.

 

Companies Within The Barnsbury Group

 

Barnsbury Joinery — London

Bespoke Timber Windows & Traditional Joinery

Barnsbury Joinery is a London-based specialist joinery workshop producing bespoke timber windows and doors, including traditional box sash windows made to measure. The team provides a complete service from survey and specification through to manufacture and installation for period homes, conservation areas and high-quality developments.

Best for:

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  • Custom box sash windows

  • Made-to-measure timber windows and doors

  • Conservation-compliant replacements

  • Architect and developer projects

 

Sash Restoration London — London

Sash Window Repair & Refurbishment

Sash Restoration London specialises in the repair, refurbishment and draught-proofing of traditional timber sash windows across the capital. Wherever possible, original windows are restored rather than replaced, improving performance while preserving character. Best for:

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  • Sash window repairs

  • Draught-proofing and upgrades

  • Period and conservation properties

 

Sash Restoration Hertfordshire — Hertfordshire

Traditional Window Restoration

Sash Restoration Hertfordshire focuses on the repair and restoration of timber sash and casement windows across Hertfordshire and surrounding areas, delivering conservation-led solutions for period and historic homes.

Best for:

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  • Heritage window restoration

  • Sympathetic repairs and upgrades

  • Non-London period properties

 

Sash Restoration Whitstable — Whitstable & Kent

Timber Window Restoration

Sash Restoration Whitstable provides specialist timber window repair and refurbishment across Whitstable and Kent, with experience in coastal conditions and heritage-sensitive properties.

Best for:

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  • Sash window restoration in Kent

  • Draught-proofing and timber repairs

  • Period and coastal properties

 

Sash Restoration Belfast — Belfast & Northern Ireland

Historic Sash Window Restoration

Sash Restoration Belfast extends the group’s expertise to Northern Ireland, offering specialist repair and restoration of traditional timber sash windows for historic and period buildings.

Best for:

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  • Sash window restoration in Belfast

  • Heritage-led repairs and upgrades

  • Conservation-sensitive projects

 

Heritage Window Consultants — UK

Heritage Advice, Surveys & Planning Support

Heritage Window Consultants provide professional window surveys, condition reports and conservation guidance for period properties, listed buildings and conservation areas across the UK.

Best for:

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  • Listed building window surveys

  • Conservation area planning support

  • Heritage statements and specifications

 

Greenmark Joinery — UK

Traditional Timber Windows & Heritage Joinery

Greenmark Joinery forms part of The Barnsbury Group, delivering high-quality traditional timber windows and heritage joinery aligned with conservation and long-term performance standards.

Best for:

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  • Timber sash window projects

  • Heritage-appropriate joinery

  • Traditional craftsmanship

 

One Group, Specialist Expertise

Each Barnsbury Group company focuses on a specific discipline or region, while sharing:

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  • Traditional joinery techniques

  • Conservation knowledge

  • Craftsmanship standards

  • A repair-first philosophy

 

This ensures every project receives the most appropriate specialist attention, without compromising on heritage, quality or performance.

 

Which Barnsbury Group Company Should You Contact?

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If you’re unsure, start with Barnsbury Joinery and you’ll be guided to the right specialist.

 

Speak to The Barnsbury Group

 

If you are looking for heritage joinery specialists you can trust, The Barnsbury Group brings together the experience, craftsmanship and conservation expertise required for historic and period properties. Get in touch to discuss your project and be connected with the right specialist company.

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