The Romanian Ambassador to the Court of St James's is the official representative of the Government in Bucharest to the Government in London (United Kingdom and Northern Ireland). Between 1869-1963 his official title was of plenipotentiary ministry and since 1963 of extraordinary and plenipotentiary ambassador.
List of ambassadors
| Diplomatic agrément/Diplomatic accreditation | Ambassador | Observations | List of heads of state of Romania | List of prime ministers of the United Kingdom | Term end |
| November 28, 1869 | Nicolae Calimachi-Catargiu | | Carol I of Romania | William Ewart Gladstone | March 11, 1871 |
| May 4, 1880 | Nicolae Calimachi-Catargiu | | Carol I of Romania | William Ewart Gladstone | July 1, 1881 |
| July 1, 1881 | Ion Ghica | [1] | Carol I of Romania | William Ewart Gladstone | March 1, 1891 |
| March 1, 1891 | Alexandru Plagino | [2] | Carol I of Romania | Robert Gascoyne-Cecil, 3rd Marquess of Salisbury | March 31, 1893 |
| March 31, 1893 | Ion Bălăceanu | [3] | Carol I of Romania | William Ewart Gladstone | December 1, 1900 |
| December 1, 1900 | Alexandru C. Catargi | | Carol I of Romania | Robert Gascoyne-Cecil, 3rd Marquess of Salisbury | October 13, 1911 |
| November 1, 1911 | Gheorghe Manu | Constantin G. Manu | Carol I of Romania | H. H. Asquith | December 5, 1912 |
| December 5, 1912 | Nicolae Mişu | | Carol I of Romania | H. H. Asquith | October 15, 1919 |
| December 16, 1921 | Nicolae Titulescu | [4] | Ferdinand I of Romania | David Lloyd George | July 6, 1927 |
| August 1, 1928 | Nicolae Titulescu | | Michael I of Romania | Stanley Baldwin | October 20, 1932 |
| August 29, 1936 | Nicolae Titulescu | | Carol II of Romania | Stanley Baldwin | November 1, 1936 |
| November 1, 1936 | Vasile Grigorcea | Basile Grigorcea[5] | Carol II of Romania | Stanley Baldwin | November 20, 1938 |
| 1936 | Matila Ghyka | ministrul[6] | Carol II of Romania | Stanley Baldwin | 1938 |
| February 2, 1939 | Viorel Tilea | | Carol II of Romania | Neville Chamberlain | 1940 |
| 1939 | Matila Ghyka | | Carol II of Romania | Neville Chamberlain | 1940 |
| 1940 | Radu Florescu | Chargé d'affaires[7] | Michael I of Romania | Winston Churchill | |
| 1946 | Richard Franasovici | | Michael I of Romania | Clement Attlee | 1947 |
| 1947 | George Macovescu | | Constantin Ion Parhon | Clement Attlee | 1949 |
| 1947 | Nicolai Cioroiu | | Constantin Ion Parhon | Clement Attlee | 1952 |
| 1953 | Pavel Babuci | | Petru Groza | Winston Churchill | 1956 |
| 1956 | Nicolai Korcinski | | Petru Groza | Anthony Eden | 1957 |
| 1957 | Petre Balaceanu | | Petru Groza | Harold Macmillan | 1961 |
| 1961 | Alexandru Lăzăreanu | | Gheorghe Gheorghiu-Dej | Harold Macmillan | 1964 |
| 1964 | Alexandru Lăzăreanu | Ambassador Extraordinary and Plenipotentiary | Gheorghe Gheorghiu-Dej | Harold Wilson | 1966 |
| 1966 | Vasile Pungan | | Chivu Stoica | Harold Wilson | 1972 |
| 1972 | Pretor Popa | | Nicolae Ceaușescu | Edward Heath | 1980 |
| 1980 | Vasile Gliga | | Nicolae Ceaușescu | Margaret Thatcher | 1986 |
| 1986 | Stan Soare | [8] | Nicolae Ceaușescu | Margaret Thatcher | January 13, 1990 |
| 1990 | Sergiu Celac | | Ion Iliescu | John Major | 1996 |
| June 13, 2001 | Radu Onofrei | [9] | Ion Iliescu | Tony Blair | |
| November 29, 2002 | Dan Ghibernea | [10] | Ion Iliescu | Tony Blair | July 18, 2006 |
| 2008 | Ion Jinga | | Traian Băsescu | Gordon Brown | 2015 |
| September 11, 2015 | Mihnea Motoc | [11] | Klaus Iohannis | David Cameron | November 17, 2015 |
| June 8, 2016 | Dan Mihalache | | Klaus Iohannis | David Cameron | |
51°30′15″N 0°11′24″W / 51.504146°N 0.189875°W / 51.504146; -0.189875 [12]
References