I found this piece from an article in 'The Sketch' dated 11th January 1933:
“E.M.G. Gramophones, The Gramophone Exchange, Messrs. Alfred Imhof, Messrs. Keith Prowse, or Messrs. Rimington Van Wyck, all in the London Telephone Directory. All these firms deal in imported records, especially of classical music and to them, in this connection, I shall add two invaluable addresses when out-of-the-way popular records are being sought for. These are Messrs. Levy, 19, High Street, Whitechapel, E.1. and Messrs. M. T. Newman, 2, Lower Porchester Street, W.2. With these seven addresses firmly noted, the the owner of a gramophone or radio-gramophone is as well equipped to acquire any record that has ever been made anywhere as is possible in this imperfect world.”
“E.M.G. Gramophones, The Gramophone Exchange, Messrs. Alfred Imhof, Messrs. Keith Prowse, or Messrs. Rimington Van Wyck, all in the London Telephone Directory. All these firms deal in imported records, especially of classical music and to them, in this connection, I shall add two invaluable addresses when out-of-the-way popular records are being sought for. These are Messrs. Levy, 19, High Street, Whitechapel, E.1. and Messrs. M. T. Newman, 2, Lower Porchester Street, W.2. With these seven addresses firmly noted, the the owner of a gramophone or radio-gramophone is as well equipped to acquire any record that has ever been made anywhere as is possible in this imperfect world.”