Brookfield Multiplex has been chosen to build the new Goldman Sachs HQ in London, Construction News can reveal.
The contractor has been preferred to Mace for the mega scheme planned by the US investment banker.
The value for the London office has not been revealed but is believed to be worth up to £350m.
Construction News revealed Goldman Sachs had gone out to the market earlier this year for the scheme which received planning permission in March 2014.
Plans include the building of a 800,000 sq ft office complex near Holborn Viaduct in central London, and the redevelopment of the neighbouring 13-storey Fleet Building and Plumtree Court on Shoe Lane.
The choice of a preferred bidder will boost hopes that the scheme will go ahead.
Goldman Sachs has warned that it could move much of its European business out of Britain if it decides to exit the EU.
Although a start date has not been confirmed, the bank had originally planned to begin work early in 2016.
The project team includes architecht Kohn Pederson Fox Associates, cost consultants EC Harris and structural engineer WSP.
The Goldman Sachs scheme has caused controversy in the past. The investment bank agreed to pay damages to 11 of 14 neighbouring properties in October 2014, due to right to light issues.
The offer of damages was rejected by Aberdeen Asset Management and Royal London Asset Management, but the dispute was subsequently settled in November last year.