The west-London-based practice beat off an impressive shortlist to win the chance to work up plans for the mixed use project.
The other shortlisted practices included Philippe Starck, Grimshaw and HOK.
GMW is working with local architect Edwin Mintoff to complete the scheme, which incorporates 60,000m 2of office, retail and residential accommodation.
A planning application will be submitted in March, with the architect expecting to start on site in October.
The running-up architect was the North-London-based BACA, which proposed a 28-storey tower 'conceived as a cruise liner docked with an office and retail block' ( pictured below).