John Griffin, the founder of Addison Lee, purchased the six‑bedroom Regency‑era house on Hanover Terrace in 2013 for £20.7 million, the same year he sold the taxi firm to Carlyle Group for about £300 million.
The property, overlooking Regent’s Park, had been listed multiple times—first at £32 million in 2021, then at £13.5 million in 2025—before finally selling for £11.5 million in October 2026, a 44 % discount from the 2013 purchase price.
Griffin’s sale came just weeks after a UK tax tribunal ruled against his claim for non‑domicile status between 2013 and 2020, a decision that could have kept his foreign earnings out of UK tax.
London’s prime‑market slump is reflected in the sale: JLL reported 457 high‑value homes sold in central London between July and September, 11 % fewer than the previous quarter, and LonRes noted a 7.9 % fall in July prices compared to a year earlier.
The transaction, completed on 5 October, underscores a broader shift in the city’s super‑prime segment, where uncertainty and low price‑growth expectations are dampening buyer demand—including cases like The Holme in Regent’s Park, which sold at a profit of about £56 million earlier this year.