Architect Grimshaw, who designed the £1 billion redevelopment of London Bridge station, scooped the top prize at this year's New London Awards, attended by London mayor Sadiq Khan.
The project was named Overall Winner 2018, while also being awarded top awards in the Transport and Infrastructure category and the Sustainability Prize, Grimshaw's joint venture partnership scheme with Network Rail praised by judges for "its impressive scale and complexity and for having sustainability as a key driving factor in both its design and construction."
Mark Middleton, partner at Grimshaw, said: "We are surprised but honoured to win these awards from the NLA. London Bridge is a transformative project, it deals with serving two communities in London, making 60 million journeys better and delivering quality architecture to the masses; perhaps the last bastion of social architecture available to the profession.”
The redevelopment of the UK's fourth biggest railway station started in 2013 to increase space and provide easier connections to other rail services and the tube to handle projected passenger growth; it was officially unveiled in May 2018 by Prince William.
Updates to the 12,000sq m station also include the creation of additional 'through platforms', enabling 30% more Thameslink trains to stop there. A new street-level concourse, the size of Wembley football pitch, opened in January 2018.
"We've already surpassed one degree of global warming," said Kristen Buida, manager of the London Climate Change Partnership.