The Steel Window Association (SWA) represents the UK’s leading specialists in the preservation and refurbishment of steel windows and doors – particularly in listed buildings, heritage properties, and conservation areas. Its members, including London-based Associated Steel Window Services (ASWS), are trusted custodians of architectural legacy, combining traditional craftsmanship with modern performance standards.
A standout example of ASWS’ expertise is its work on The Northcliffe – the Grade II listed former Daily Mail headquarters in London’s Whitefriars Conservation Area. Working alongside John Robertson Architects (JRA), ASWS was selected for its proven track record in delivering high-quality restoration on heritage projects.
At the outset, ASWS conducted a full condition survey across the building’s complex elevations, internal doors, and screens – covering steel, aluminium, and curtain walling. This detailed report formed a key part of the tender process and set the foundation for the restoration strategy.
ASWS Operations Director, Kris Bennell, described the scope: “For the steel windows, we carried out full servicing and detailed cleaning of the original copper light glazing, along with redecoration and overhaul of all ironmongery. On-site, we completed extensive mastic work and redecoration across the remaining windows which included timber sashes.”
JRA Associate Andy Thomas highlighted the architectural significance of the copperlight windows, which were retained as a key interior feature. He praised ASWS’ role in restoring these elements and managing the sequencing of works with precision.
ASWS’ contribution was instrumental in helping the project team meet its sustainability goals. By restoring and reusing original components wherever possible, The Northcliffe is now on track to achieve a BREEAM Outstanding rating – placing it among the top 1% of commercial refurbishments in the UK.
For further information on the Steel Window Association or if you’re interested in becoming a member, please click here.
