Twenty old Bailey is an office building located in the city of London. The building was built in 1980 and after three decades it was necessary a renovation and an extension of the building.

These new works provided the Twenty Old Bailey with a high-quality, contemporary office space, adding a two-storey extension to create an additional 2900sqm of additional space. The refurbishment replaced the entired facade of the 1980s with a natural stone facade that blends perfectly with the bronze colour of the windows and adapts to the materials used in the retained parts of the building.