Robert Wood Johnson was sworn in as the U.S. Ambassador to the United Kingdom at a ceremony with President Trump and Vice President Pence at the White House, August 21, 2017.
The Ambassador, or Chief of Mission, is the highest ranking American official in the United Kingdom. The position’s full title is “Ambassador Extraordinary and Plenipotentiary”. It is “extraordinary” in that the Ambassador is the personal representative of the President of the United States to Her Majesty the Queen. The “plenipotentiary” in the title indicates full power to negotiate. As well as being responsible for the work of the various sections of the Embassy, the Ambassador coordinates the activities of all departments and agencies of the United States Government with representatives in Britain.
Deputy Chief of Mission
Mr Lewis Lukens is Deputy Chief of Mission (DCM).
Assisting the Ambassador is the Deputy Chief of Mission (DCM), a position carrying the rank of Minister. The DCM is responsible for the day to-day running of the Embassy and also undertakes high-level representation, negotiation, appraisal, and reporting duties. In the Ambassador’s absence the Minister becomes Chargé D’Affaires, thereby assuming all the Ambassador’s functions and responsibilities.