The GHS Limited Partnership has pre-let 53,900 sq ft of office space in the Hanover Square development to Glencore UK Limited, the global natural resource company.
Glencore will take the second to fourth floors of 18 Hanover Square on three separate twenty-year leases (without break).
57,200 sq ft on the fifth to eighth floors was let to Kohlberg Kravis Roberts & Co. Partners LLP last year on fifteen-year leases.
Only the first floor is now available (16,500 sq ft) at Hanover Square.
Toby Courtauld, Chief Executive of Great Portland Estates, commented: "This has been a rare opportunity to create a world-class development, on a premier garden square, in the heart of Mayfair. We have been delighted by the strong occupier interest, and to have attracted both Glencore and KKR to 18 Hanover Square is a testament to its quality. To date we have secured 41% of the overall gross development value of the scheme, 18 months ahead of practical completion, and we are encouraged by further leasing discussions ongoing on much of the remaining space."