Stanley Roper was an organist who played at Westminster, among other locations, and was a frequent visitor to the Gramophone Company studios in the acoustic era, and then subject to location recording in the electrical era

St. Margaret’s Chimes, Westminster. “O God, our help in ages past”
Impressions of London (Westminster). Actual recording of BIG BEN and traffic noises. St. Margaret’s Chimes and Organ (“The Old 100th”)
Stanley Roper, organ

St Margaret’s Chimes. “O God, our help” - Roper

Impressions of London. “The Old 100th” - Roper

(mp3 file – click to play, or right click the link, then select “Save as”)

His Master’s Voice B 2398
Matrices BR 868-III, 869-I (9764, 9765)
Recorded 24th November 1926, St. Margaret’s Church, Westminster, London