In 1949, the 150th anniversary of Alexander Pushkin's birth was organised at the hotel by the Society of Cultural Relations with the USSR, attended by the Soviet chargé d'affaires, the Polish ambassador, the Romanian minister, and Cecil Day-Lewis, raising MI5's suspicions that he still had communist sympathies, a contention he later denounced.
In the post-war period, the Dorchester became one of the most popular hotels in London for actors and entertainers, and the banqueting rooms and suites became known for their press conferences and parties.
Diners at the Dorchester included Cyril Connolly, T. S. Eliot, Harold Nicolson, and Edith Sitwell, with a clientele of luminaries such as Ralph Richardson, Elizabeth Taylor, Alfred Hitchcock, and Barbra Streisand.
Queen Elizabeth II attended the Dorchester when she was a princess on the day prior to the announcement of her engagement to Philip Mountbatten on 10 July 1947.
Philip also held his stag night party at the hotel, which has been documented in a plaque.

When Said bin Taimur of Oman was ousted in a coup in July 1970 and replaced with his son Qaboos bin Said, he was sent in exile and lived at the Dorchester until his death in 1972.
The McAlpine family owned the hotel until 1977 when they sold it to a consortium of businessmen from the Middle East headed by the Sultan of Brunei.
On 3 June 1982, Shlomo Argov, the Israeli ambassador to the United Kingdom was shot and seriously injured in an assassination attempt as he left the Dorchester.
The attack was the immediate cause for the 1982 Lebanon War.

In 1985, the hotel was purchased by the Sultan of Brunei.
The hotel is currently owned by the Dorchester Collection, which in turn is owned by the Brunei Investment Agency (BIA), an arm of the Ministry of Finance of Brunei.
The Dorchester Collection owns luxury hotels in the United Kingdom, the United States, France, Switzerland and Italy.
In 1988, the hotel closed for two years for a major refurbishment.

In June 1998 the brother of the Sultan of Brunei, Prince Jefri Bolkiah, was sued by his former business partners in a case that was settled out of court.
During the case the Manoukians claimed that Prince Jefri kept 40 prostitutes at a time at the Dorchester.
In 1999, the hotel hosted the first ever Pride of Britain Awards.
In March 2002, a robbery took place in the lobby of the hotel when thieves wearing ski masks smashed the jewellery cabinets with a sledgehammer and took off with jewels.
The Dorchester celebrated its 80th anniversary in 2011.
To mark the event, the charity 'Trees for Cities' planted eighty 'future great trees' around the capital.

From about 1985 to 2018, the hotel hosted the annual Presidents Club charity dinner, a "mainstay of London’s social calendar".
The charity disbanded in 2018 after reports that hired hostesses had been sexually harassed and assaulted by the all-male guests.
In 1949, the 150th anniversary of Alexander Pushkin's birth was organised at the hotel by the Society of Cultural Relations with the USSR, attended by the Soviet chargé d'affaires, the Polish ambassador, the Romanian minister, and Cecil Day-Lewis, raising MI5's suspicions that he still had communist sympathies, a contention he later denounced. In the post-war period, the Dorchester became one of the most popular hotels in London for actors and entertainers, and the banqueting rooms and suites became known for their press conferences and parties. Diners at the Dorchester included Cyril Connolly, T. S. Eliot, Harold Nicolson, and Edith Sitwell, with a clientele of luminaries such as Ralph Richardson, Elizabeth Taylor, Alfred Hitchcock, and Barbra Streisand. Queen Elizabeth II attended the Dorchester when she was a princess on the day prior to the announcement of her engagement to Philip Mountbatten on 10 July 1947. Philip also held his stag night party at the hotel, which has been documented in a plaque.
When Said bin Taimur of Oman was ousted in a coup in July 1970 and replaced with his son Qaboos bin Said, he was sent in exile and lived at the Dorchester until his death in 1972. The McAlpine family owned the hotel until 1977 when they sold it to a consortium of businessmen from the Middle East headed by the Sultan of Brunei. On 3 June 1982, Shlomo Argov, the Israeli ambassador to the United Kingdom was shot and seriously injured in an assassination attempt as he left the Dorchester. The attack was the immediate cause for the 1982 Lebanon War.
In 1985, the hotel was purchased by the Sultan of Brunei. The hotel is currently owned by the Dorchester Collection, which in turn is owned by the Brunei Investment Agency (BIA), an arm of the Ministry of Finance of Brunei. The Dorchester Collection owns luxury hotels in the United Kingdom, the United States, France, Switzerland and Italy. In 1988, the hotel closed for two years for a major refurbishment.
In June 1998 the brother of the Sultan of Brunei, Prince Jefri Bolkiah, was sued by his former business partners in a case that was settled out of court. During the case the Manoukians claimed that Prince Jefri kept 40 prostitutes at a time at the Dorchester. In 1999, the hotel hosted the first ever Pride of Britain Awards. In March 2002, a robbery took place in the lobby of the hotel when thieves wearing ski masks smashed the jewellery cabinets with a sledgehammer and took off with jewels. The Dorchester celebrated its 80th anniversary in 2011. To mark the event, the charity 'Trees for Cities' planted eighty 'future great trees' around the capital. 
From about 1985 to 2018, the hotel hosted the annual Presidents Club charity dinner, a "mainstay of London’s social calendar". The charity disbanded in 2018 after reports that hired hostesses had been sexually harassed and assaulted by the all-male guests.
The Dorchester