AHMM has submitted proposals to add two new storeys to Denys Lasdun’s brutalist IBM headquarters on London’s South Bank as part of a wider refurbishment of the 1980s building.

Its scheme includes enhancements to the ground floor of the existing building, which sits beside Lasdun’s National Theatre, along with new restaurants and cafes fronting Queens Walk and the River Thames.

The client, Wolfe Commercial Properties Southbank – owned by the United Arab Emirates-based Easa Saleh Al Gurg Group – said AHMM’s proposals would deliver new public space to ease crowding on the embankment walk, while the building’s currently-unused terrace areas would be “brought back to life” to provide “highly sustainable, biodiverse and ecological” amenity space for occupants.

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