[2] As part of the war effort in the 1900s, The Royal Palace was taken over and used as the headquarters for the Woman's Royal Voluntary Service.

[3] In the 1961, as part of a Labour Government grant, the Queen Anne-style building[2] was demolished and completely rebuilt in a Brutalist-style under the guide of architect, Colonel Richard Seifert.

[5] In 1994, the hotel was bought by the Singaporean entrepreneur, Tan Sri Khoo Teck Puat, and undertook a £30 million refurbishment.

[6] In May 2011, the hotel completed the final stage of an extensive £45 million refurbishment.

[7][5] The hotel closed in 2020, with plans and reopened in 2022 following the refurbishment of rooms and a restaurant.