Behind the famous facade of Buckingham Palace, the eastern range was built in 1847 to unite earlier ranges by John Nash and form an elegant central courtyard. Built with Caen limestone, the new elevation began to fail almost immediately, and underwent a series of “improvements” including harmful Portland cement repairs and lavish applications of oil paint. While the Mall elevation was eventually refaced in 1912, the east elevation continued to decay. We were commissioned by the Royal Household Property Section to undertake restoration work in 2007. A paint stripping trial exposed severe damage to the underlying stonework, while also revealing exquisite detailing and decoration underneath the paint. We carefully sourced replacement stone from the recently re-opened Caen mine in Normandy, and oversaw rigorous testing to demonstrate its suitability. A skilled team of stonemasons carried out repairs, while beautiful new stone carvings were produced to replace damaged or decayed elements. We also oversaw repairs to windows, doors and lead work. We cleaned and regilded the clock on the central pediment, and carried out sensitive conservation of Edward Hodges Baily’s Nine Muses sculpture. Finally, the iron gates were removed for cleaning and repair, and the central gates were regilded for the first time. It was a privilege for us to oversee a highly skilled team of masons, conservators, leadworkers, carpenter and other specialists, who worked together to ensure the highest standards of repair to one of the world’s most important buildings.