High Commission of Trinidad and Tobago, London

The Embassy of Turkey in London is the diplomatic mission of Turkey in the United Kingdom. There was an embassy of the Ottoman Empire in London dating from 1793; this was suspended in 1914 following the outbreak of the First World War and replaced by the embassy of the new Republic of Turkey in 1924. From 1901-1954 the embassy was located at 69 Portland Place before moving to its current location; however this building was kept and is currently used as the Ambassador's Residence.The embassy is housed in one of a group of Grade I listed buildings at 38—48 Belgrave Square.Turkey also maintains a Consulate at Rutland Lodge, Rutland Gardens, Knightsbridge.

The Italian Cultural Institute, London (Italian: Istituto Italiano di Cultura) is based at 39 Belgrave Square in Belgravia, London. The institute promotes Italian culture and organises events at its own premises including exhibitions, concerts and meetings. It also supports the learning of Italian language through the set-up of group lessons. It deals with many activities elsewhere in UK. There are a library, an internal café and other facilities available for those who are involved in its activities. Various types of membership are available for individuals and organisations.

An outdoor bronze sculpture depicting Venezuelan military and political leader Simón Bolívar (1783–1830), by Hugo Daini, is located at the south-east corner of Belgrave Square in London, United Kingdom. The statue was unveiled by James Callaghan, then Secretary of State for Foreign and Commonwealth Affairs, later Prime Minister of the United Kingdom, in 1974.On the plinth are the words: I am convinced that England alone is capable of protecting the world's rights as she is great, glorious and wise The names of countries liberated by Bolívar are inscribed on the base.

The High Commission of Malaysia in London is the diplomatic mission of Malaysia in the United Kingdom. Prior to independence the then-Malaya had a Commission in London; this was upgraded to a full High Commission upon independence in 1957. It was initially located on Trafalgar Square before relocating to Great Portland Street; it then moved to its current location in the mid 1960s.

The High Commissioner of Malaysia to the United Kingdom of Great Britain and Northern Ireland is the head of Malaysia's diplomatic mission to the United Kingdom. The position has the rank and status of an Ambassador Extraordinary and Plenipotentiary and is based in the High Commission of Malaysia, London.

COMO The Halkin is a 5-star hotel in London, England. It is located in Belgravia, one of London's most affluent districts, just to the east of Belgrave Square in Halkin Street. It is operated by COMO Hotels and Resorts. It is considered to be one of the first boutique hotels in London. The Halkin has a Georgian façade of bricks and stone, but its interior and its 41 rooms and suites has a more contemporary design. COMO The Halkin is also the first hotel for COMO Hotels and Resorts. The hotel spent about £1 million on each of the 41 guest rooms and suites designed by Laboratorio Associati Italy.

Halkin Street is a street in Belgravia, London, running south-west to north-east from the north-east corner of Belgrave Square to Grosvenor Place. Notable buildings include Forbes House, a Grade II-listed detached mansion at No. 10, built in the early-mid 19th century.The 5-star Halkin Hotel is at No. 5–6, and the Mexican Consulate is at No. 8. The street is also home to the Belgrave Chapel and the Caledonian Club.

The Royal College of Defence Studies (RCDS) instructs the most promising senior officers of the British Armed Forces, His Majesty's Diplomatic Service and Civil Service in national defence and international security matters at the highest level, to prepare them for the top posts in their respective services. It forms part of the Defence Academy of the United Kingdom, and is its most senior and prestigious component. In addition, there are many overseas attendees, from countries who are close allies of the United Kingdom. It was known as the Imperial Defence College from its foundation in 1927 until 1970.

The Caledonian Club is a private club founded in 1891. It is located at 9 Halkin Street SW1, near Belgrave Square, Belgravia, London.

Seaford House, originally called Sefton House, is a former aristocratic mansion and the largest of the detached houses sited on each corner of Belgrave Square, London, England. It is a magnolia stucco building with four main storeys most famed for its interiors (the first floor, or piano nobile, being decorated in the French style). Dating from 1842, Sefton House was designed by Philip Hardwick to meet the requirements of 3rd Earl of Sefton. The house, with its railings and gate piers, have been listed Grade II* for their architectural merit. The 3rd and 4th Earls used it as their town house; the 5th Earl, being an invalid, could not do so and after he died childless in 1901, the lease was sold to William Tebb. Lord Howard de Walden, who was also Baron Seaford, acquired the lease for Sefton House in 1902 and renamed it Seaford House. He installed friezes, panelling, and a staircase of green onyx specially imported from South America. The house was requisitioned by the wartime Government in 1940, and for a while was used as offices by the Air Ministry. It was badly damaged by aerial bombing in October 1940, and rebuilt thereafter (but without the porte-cochere). In 1946, the house became the home of the Imperial Defence College, now the Royal College of Defence Studies. Seaford House is usually open to the public free of charge on Open House Weekend each September. But it can also be seen on screen. The main vestibule doubled as Titanic's Grand Staircase in the 1979 miniseries SOS Titanic. It was also used in the filming of Upstairs, Downstairs. Seaford House later stood in as the exterior of the home of Maggie Gyllenhaal's character Nessa Stein in the BBC and SundanceTV television miniseries The Honourable Woman in 2014. It can also be seen (doubling as the US Embassy) in the 2021 film The King's Man*.

49 Belgrave Square is a Grade II* listed house in Belgrave Square, Belgravia, London. It was finished in 1851, designed by Thomas Cubitt. In 1859, Mayhew & Knight built the entrance and added the octagonal lobby.It was originally known as the "Independent North Mansion". The first owner, Sidney Herbert, 1st Baron Herbert of Lea, named it "Belgrave Villa". His son, Sidney Herbert, 14th Earl of Pembroke, was born there in 1853. After Herbert, the Duke of Richmond lived there.The house was subsequently acquired by Alfred Beit, and his brother Sir Otto Beit inherited it in 1906. His son Sir Alfred Beit, 2nd Baronet, grew up there and on his father's death in 1930 inherited the house, together with his large art collection. He relocated to Kensington Palace Gardens, and sold the house in 1936.The building was acquired by Argentina in 1936, and has since been used as that country's Ambassador's official London residence. It has been opened to the public on one weekend a year since 2006, as part of Open House London, which notes the "sumptuous interiors still intact".During the Second World War, the house became a meeting place and haven for Argentines who volunteered in the British forces, mostly as pilots.

Belgrave Square is a large 19th-century garden square in London. It is the centrepiece of Belgravia, and its architecture resembles the original scheme of property contractor Thomas Cubitt who engaged George Basevi for all of the terraces for the 2nd Earl Grosvenor, later the 1st Marquess of Westminster, in the 1820s. Most of the houses were occupied by 1840. The square takes its name from one of the Duke of Westminster's subsidiary titles, Viscount Belgrave. The village and former manor house of Belgrave, Cheshire, were among the rural landholdings associated with the main home and gardens of the senior branch of the family, Eaton Hall. Today, many embassies occupy buildings on all four sides.