On Tuesday (22 March) the practice was picked to design the new London School of Economics (LSE), beating a shortlist of six big-name architects in the process.
The announcement came just hours after Grimshaw had been chosen to mastermind the expansion of the Queens Museum of Art (QMA) in New York.
The £30 million LSE scheme ( pictured) is set to transform a former government building in Kingsway into a 'landmark teaching and research space'. Overlooking Lincoln's Inn Fields, the new facility will contain three lecture theatres, more than 30 classrooms, academic offices and a café.
The five other finalists in the LSE design contest were AHMM, David Chipperfield Architects, Eric Parry Architects, HOK International and KPF.
Meanwhile, Grimshaw has also come up trumps in New York, with a competition-winning scheme to double the size of the QMA.
The practice wants to overhaul the southern half of the existing museum building, which currently houses an ice-skating rink, and create new gallery, education and administrative spaces.
Tom Anderson of Ammann & Whitney, the consultant architect on the project, said: 'We think QMA can become the new town square for the diverse Queens community - the place to go for multiple events that celebrate the ethnic diversity of the borough.'