Bruton Street is a street in London's fashionable Mayfair district, running from Berkeley Square to New Bond Street.[1] Today, as it probably was in Christie's time, this street is lined with upmarket boutiques and salons.
Bruton Street in works by Agatha Christie[]
Messrs. Antoine's Hairdressers, where Jane Grey works, is located in Bruton Street. (Death in the Clouds) This would suggest that it was a very upmarket establishment.