Lea observes that a chimneypiece matching Adam’s design (Adam volume 23/58) is visible in a view of the library dating to 1853. The piece is thought to survive in situ in what is now a private dining room.

Harris credits the execution of the Apsley House mirrors and girandoles to Sefferin Nelson, the carver and gilder appointed to execute Adam’s designs for Derby House. She notes a significant payment of £259 made to Nelson from Lord Bathurst’s account at Drummond’s, dating to 1779.