On 24 January 1963, Leslie Fielding, a British diplomat in the Western Organisations Department of the Foreign Office, sends a letter to W. M. Mumford, a member of the United Kingdom delegation to North Atlantic Treaty Organisation (NATO) in Paris, in which he recalls the importance of pressing for amendments to be made to the figures for submarine tonnage presented by the Federal Republic of Germany to the Agency for the Control of Armaments (ACA). The letter raises the question of the procedural responsibility between the Western European Union (WEU) Council in London and the North Atlantic Council in Paris regarding amendments. The Foreign Office suggests a procedure whereby an amendment can be made within the WEU Council without the need to remit the question again to NATO in Paris. After outlining this procedure, the Foreign Office notes that the UK representative will confirm and support the French Ambassador’s remarks at the next WEU Council meeting. This procedure is still subject to the personal approval of Geoffroy Chodron de Courcel, the French Ambassador to the United Kingdom.