One property source said: “They’re certainly keeping it in the family.”
Oxford Properties and British Land declined to comment.
The latest letting means that just a handful of floors are left available in the tower, which along with the nearby Walkie-Talkie were among the first major speculative property schemes in the City following the financial crisis.
The construction team on the Cheesegrater has been forced to carry out repairs to the tower’s steel structure after a number of five-inch diameter “mega-bolts” failed. The work will continue until the end of the year.