AshbyCapital and Helical plc have agreed a new 15-year lease at One Bartholomew with InfraRed Capital Partners.

The leading global investment manager focused on infrastructure and real estate, InfraRed will take the whole of the 7th floor at One Bartholomew which totals 19,609 sq ft of space.

Gerald Kaye, Chief Executive at Helical, said: “One Bartholomew has already gained an outstanding reputation and this is borne out by the high calibre of tenants we are attracting. We are very pleased to welcome InfraRed to the building who are an expanding internationally recognised business. There are still high levels of demand for quality office space in London and Barts Square’s prime location in the heart of the City delivers this as well as extensive public realm improvements, excellent transport links and restaurant offerings.”

Werner von Guionneau, Chief Executive at InfraRed Capital Partners, added: “Helical has successfully completed a visionary project that provides Infrared with a perfectly suited setting for the realisation of our own corporate ambitions. The building meets our high expectations for sustainability and provides space that will accommodate a state-of-the-art collaborative working environment. Being an investor in infrastructure and real estate we are particularly sensitive to the connectivity of locations and One Bartholomew combines one of the best transport connections in London with an inspiring and vibrant evolving neighbourhood.”

This latest letting at One Bartholomew follows the 15-year lease agreement with the University of Chicago Booth School of Business signed in April to take 43,000 sq ft of space, where it will create a new facility for its European campus.

Trade Desk Inc., the global technology company, has taken the top four floors, comprising 74,210 sq ft., meaning that only 77,000 sq ft over four contiguous floors remains available at the building.

Helical and AshbyCapital were advised by Savills, Ingleby Trice and CBRE. Knight Frank represented InfraRed.