125 Old Broad Street

This building, originally designed by Llewelyn-Davies, Weeks, Forestier-Walker & Bor and opened by HM The Queen in 1972, was the home of the London Stock Exchange until 2004. Brutalist in style and originally clad with concrete panels it was damaged by a terrorist bomb in 1990, which led to the closure of the public galleries. In 2002 it was purchased by Hammerson who instigated a renovation programme. Grimshaw were commissioned to redesign the exterior and obtain planning permission before passing the project over to GMW, who acted as executive architects. As part of the works the exterior envelope was removed and each floor slab was extended out by approximately 2.0m all round, resulting in a significant increase in lettable area, before applying new contemporary curtain wall cladding. The original podium block was demolished and replaced with a new six storey block in the same style.