The practice beat rival projects designed by Make, Foreign Office Architects and KPF ( pictured below) to win the high-profile competition, it was announced earlier this week.
Already dubbed the 'Three Sisters', the winning architect's concept comprises two office buildings next to a residential tower.
The site, currently occupied by Elizabeth House, is bounded by York Road and Waterloo Station.
The announcement of the winner was delayed in order for developer P&O Estates to hold a public exhibition of the designs in Elizabeth House last weekend, which was attended by the public and local councillors.
The developer claims that the London Plan's 'Waterloo Opportunity Area' identifies the site of the proposed development as an area that should provide 15,000 jobs and 500 new homes.
According to P&O Estates, detailed design work on the project will begin immediately, with a planning application scheduled to begin in summer 2006.