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Elizabeth Tower, Palace of Westminster

London, United Kingdom

º£½ÇÊÓƵ played a key role in supporting the safety and resiliency of one of the United Kingdom’s best-known landmarks.

Few structures are as instantly recognisable as Elizabeth Tower. Rising above the Palace of Westminster, its clock and bell – Big Ben – have become enduring symbols of the nation. When the opportunity came to restore this iconic building, the challenge was clear: to preserve its historic character while ensuring it meets the safety and performance standards expected of a modern public building.

The restoration, led by architects Purcell, was one of the most ambitious conservation projects ever undertaken in the UK. It demanded a meticulous approach, balancing heritage sensitivities with the practicalities of 21st-century engineering. For º£½ÇÊÓƵ, this meant applying our expertise in two critical areas: fire engineering consultancy and acting as NEC3 Supervisor for fire engineering and the building services engineering (MEP) works.

Our fire engineering team faced a unique set of constraints. Elizabeth Tower is a Grade I listed structure, and every intervention had to respect its historic fabric. Conventional solutions were rarely an option. Instead, we worked closely with the wider project team to develop strategies that delivered the highest possible level of fire safety without compromising the building’s integrity. This involved detailed assessments of existing elements – such as the existing cast iron structure, original timber doors and ceilings – to determine their performance and identify where discreet upgrades were necessary.

We also supported the integration of a sprinkler system, an enhanced lift package which can be used for evacuation and fire fighting access, and the provision of a dry fire main. This was a significant achievement in a 19th-century tower where space is limited and heritage considerations are paramount. These measures significantly enhanced fire fighting and means of escape provisions within the Tower, but they were not just about life safety; they were also about protecting an irreplaceable cultural asset for generations to come.

Alongside this, we served as NEC3 Supervisor for fire during construction and the MEP installations. In this role, we acted on behalf of the client to verify that the works met the design intent and were delivered to the highest standards. Our oversight was critical in ensuring compliance and ensuring issues were resolved as they arose. Heritage projects of this scale inevitably uncover surprises once work begins. Our approach was always proactive: rather than allowing challenges to stall progress, we collaborated with designers, contractors and the client to find practical solutions that kept the project moving.

The restoration extended far beyond conservation. Enhancements to the visitor experience were a key part of the brief, including the installation of a lift and the creation of exhibition spaces at the base of the tower. These interventions required careful coordination to ensure that modern systems could be introduced without detracting from the building’s historic character. Our supervisory role helped maintain this balance, safeguarding both functionality and authenticity.

Working on Elizabeth Tower was a privilege – and a responsibility. This is a structure seen by millions every day, whether in person or on screens around the world. Its restoration demanded not only technical excellence but also a deep respect for its cultural significance. By combining specialist fire engineering knowledge with rigorous quality assurance, º£½ÇÊÓƵ played a vital part in securing the future of one of Britain’s most treasured landmarks.