 The Secretary of State thought that until [the United Kingdom] representative had been appointed, it would be undesirable that the Defence Departments should raise with the Éire Government, the grant of any major defence facilities (e.g.the use of Berehaven) 

Similarly, the British mission in Dublin was styled not as the High Commission but as the "British Representative's Office".In 1948, the Oireachtas passed the Republic of Ireland Act, under which Ireland withdrew from the Commonwealth the following year, and the name of the office was changed to "Ambassador", although holders of the post continued to be recruited from the Commonwealth Relations Office, later the Commonwealth Office, until the appointment of Sir John Peck in 1970.