It represents the first major construction phase to form the new £337m home for the museum within a series of historic buildings in the Square Mile.
This initial phase of works will involve extensive restoration to the General Market building which dates back to the 1880s.
Michael O’Hagan, Managing Director – Built Environment at Keltbray, said: “Keltbray’s partnership approach to design, delivery and stakeholder liaison will be instrumental in achieving the desired outcome on what will be one of London’s most prestigious projects.
“The application of digital engineering and modern self-delivery methods will bring greater control to this complex scheme, while also supporting economic growth and providing significant social value for London and the UK.”
Darren James, Chief Executive Officer at Keltbray, said: “We are delighted to have secured the first major package of works on this once-in-a-generation opportunity to reconceive what a museum for London can be, a bespoke shared place for Londoners and visitors from around the world.”