7 and 8 Balfour Place

[3] Balfour Place was originally known as Portugal Street (honouring the Portuguese wife of King Charles II), until the Grosvenor family renamed it after their chief surveyor.

[2] In 1978, the heiress Christina Onassis, who owned a three-bedroom flat in nearby Reeves Mews, flew in to London for a one-day shopping tour, amid considerable press interest.

[2] She viewed the house, but was apparently put off by the de Grimston co-founders of The Process Church of The Final Judgment, living in the street, and the press calling their property "Satan's Cave".

[4] In 2014, it was listed for sale at £45 million, with seven reception rooms, 19 bedrooms, six kitchens and 17 bathrooms".

[5][6] In 2016, billionaire British banker Peter Cruddas and his wife Fiona paid £42 million in cash for the seven-storey mansion, formerly owned by the Iranian-born art dealer Nasser Khalili, who lived there for 22 years.