Helical, a United Kingdom-based property investment and development company, completed the acquisition of 100 New Bridge Street, a building, which is held on a 999-year long leasehold, from National Rail Infrastructure, a firm that owns and maintains rail infrastructure, for £160m ($209m). Helical proposes to carry out a major, sustainable refurbishment to create a new best-in-class Grade A office building and undertake significant public realm improvements around the site.