After consultations with the Foreign Office, Home Office and King George VI's private secretary, Sir Alan Lascelles, a ciphered telegram dated 18 April 1945 and crafted by Sir Albert Napier, permanent secretary to the Lord Chancellor, was transmitted from the British Foreign Office to the Foreign Adviser to the British Commander in Chief at Berlin: "The Duke of Brunswick has formally applied to The King by letter of March 22nd for the consent of His Majesty under the Act 12 Geo. III, cap. 11 to the marriage of his son Prince George William with Princess Sophia Dowager Princess of Hesse. The marriage is understood to be taking place on April 23rd. Please convey to the Duke an informal intimation that in view of the fact that a state of war still exists between Great Britain and Germany, His Majesty is advised that the case is not one in which it is practicable for His consent to be given in the manner contemplated by the Act." The National Archives (UK)LCO 2/3371A: Marriage of Prince George William, son of the Duke of Brunswick, with Princess Sophia, Dowager Princess of Hesse. Request for The King's consent.
Eagleston, Arthur J. The Home Office and the Crown. pp. 9–14. The National Archives (United Kingdom)|TNA, HO 45/25238, Royal Marriages.
