Freemasons’ Hall, a Grade II* listed landmark in London, is both the headquarters of the United Grand Lodge of England and a vibrant event space. When Regent Street Disease (the term used to describe corrosion of steel frames within masonry-clad buildings) threatened its historic fabric, the client sought a solution that would preserve its integrity while keeping the building operational.

Traditional repair methods used in earlier phases replaced much of the original stone, altering the building’s character. For phase three, the client chose Impressed Current Cathodic Protection (ICCP), a non-invasive technique to halt steel corrosion. Baily Garner led the coordination, securing planning approval, managing installation, and facilitating workshops to ensure all stakeholders understood the system.

As a result, 97% of the original stonework was retained, and the tower remained open throughout. ICCP will now be used for all future phases, forming the UK’s largest cathodic protection project.