The structural modifications, which involved moving the main entrance from the east facade to that of the north and also adding an office wing on the west, have significantly affected the interior.
George Melly, the jazz singer, critic and art historian, who was related to the Holt family, has described aspects of life at Sudley House during his various childhood visits in the 1930s, when it was owned by George Holt's only child, Emma Georgina Holt.