[2] During World War One, the Great Northern Hospital was one of the first in London to receive wounded soldiers, and by 1916 had treated over 1,000.

[6] The foundations to the new casualty department was laid by Lady Patricia Ramsay in July 1923,[7] and the new building was opened by the Prince of Wales on 27 November 1923.

[8] A purpose built nurses' home, designed by Henry Adams, was opened in 1924 by Princess Louise Duchess of Argyll.

[9] In 1929, the construction of a three-storey addition called St. David's wing started thanks to a donation received by the hospitals largest benefactor: Sir Howell J. Williams.

[2] A memorial wall of plaques has been installed in the gardens to commemorate the history of the site and some of the individuals involved with its creation.