Isthmian Club

The St James's Club was a London gentlemen's club which operated between 1857 and 1978. It was founded by two leading diplomats and its members continued to be largely diplomats and authors. It was first established in Charles Street and moved to 106 Piccadilly by 1868. In the final quarter of the twentieth century many gentlemen’s clubs of London suffered from declining membership, and in 1978 the St James's Club merged with Brooks's Club and vacated its premises.

The Bachelors' Club was a London gentlemen's club in the late nineteenth and early twentieth century, now defunct. As the name suggests, membership was only open to bachelors. The club had a reputation for having a markedly younger membership than many other Edwardian clubs, and given the high-spirited antics which sometimes ensued on the premises, it was cited (along with Buck's and the Bath Club) as an influence on the fictional Drones Club, in some of P.G. Wodehouse's earlier stories. A persistent rumour circulated throughout its existence, and reached wider circulation in the 1920s, that some of its membership were gay - then both illegal and publicly frowned upon – and it soon became superseded by Buck's as the young man's club in London, being forced to close shortly thereafter. The club was first situated at 11 Hamilton Place, then at 8 South Audley Street, and finally it amalgamated with the St. James's Club in 1946 at 106 Piccadilly. Famous members included John Buchan, Field Marshal Sir Herbert Kitchener, and Capt. Berkeley Levett, a witness in the Royal Baccarat Scandal.

Eaton Square School is a co-educational and independent day school.

The Junior Constitutional Club was a political London gentlemen's club founded in 1887, and located at 101 Piccadilly. It was aligned to the Conservative party, with members having to pledge support. Heavy over-subscription for the Constitutional Club which had opened in 1883 led to the creation of a further mass-membership Conservative club. By 1890, it was reported by Whittakers Almanack to have 10,000 members, making it one of the largest clubs in history, but this level of membership proved to be short-lived; by 1890 its membership had halved to around the 5,500 level, and by 1900 it was still slightly further down, at 5,000. It had closed by 1904, when its building was taken over by the pro-Tariff Reform United Empire Club.

The Embassy of Japan in London is the diplomatic mission of Japan in the United Kingdom. The embassy occupies a large Victorian building on Piccadilly opposite Green Park, which is Grade II listed. It was once the former Junior Constitutional Club, which was the first building in London to have its exterior entirely clad in marble.

The Sheraton Grand London Park Lane is a 5 Star hotel on Piccadilly, London. The hotel opened in 1927 as The Park Lane Hotel to designs by architects Adie, Button and Partners, in a grand Art Deco style, and was constructed by the developer Sir Bracewell Smith. The original architect had been C. W. Stephens, who designed Harrods, but work had stopped at the outbreak of the First World War, and Stephens died in 1917. The building is a fine example with a mansard roof and Portland stone facade. The building is Grade II listed and has 303 bedrooms on eight floors with the front overlooking Green Park towards Buckingham Palace. The hotel was bought by ITT Sheraton in April 1996 for $70 million. ITT Sheraton was acquired by Starwood in 1998. Starwood sold its leasehold on the hotel to Sir Richard Sutton's Settled Estates in 2014, but continues to operate the property, under a long-term management contract. Though the hotel was a Sheraton property from 1996 on, it did not actually begin using the Sheraton name for twenty years, until 19 July 2016, when it was renamed Sheraton Grand London Park Lane upon the completion of a major renovation.The hotel is featured in the films The End of the Affair, The Winds of War and The Golden Compass.

The Public Schools Club is a former London gentlemen's club. The Public Schools Club was founded in October 1863 at 17 St James's Place, London. As outlined in the British journal The Athenaeum, from its foundation, the club restricted its membership to former pupils of Charterhouse School, Eton College, Harrow School, Rugby School, Shrewsbury School, Oundle School, Westminster School and Winchester College.By 1885, a "Public Schools Club" was advertising for "suitable premises" in London in which to re-establish their establishment.The club was re-founded in 1909, based at number 13 Albemarle Street which until very recently had been the home of the Albemarle Club. The Public Schools Club disbanded during World War I as a result of the heavy casualties sustained among its membership.By 1910, the alpine sports club which had been founded c.1905 as the Winter Sports Club by Sir Henry Lunn was incorporated as the Public Schools Alpine Sports Club and under the control of “Alpine Sports, Ltd.”. In 1910, the club advertised that it "devoted its attention to Norway as a field for winter sports". Many British gentlemen's sports clubs such as the Yorkshire Ramblers' Club were interested in the activities of Sir Henry Lunn and his son Sir Arnold Lunn.After the war the club was re-founded in 1920 in Curzon Street, Mayfair. A 1937 road-widening scheme (linked to the 1935 road alterations which necessitated demolishing half of Lansdowne House and creating the Lansdowne Club) forced the club out of its premises, and it moved to 100 Piccadilly, where it remained for the rest of its existence. Suffering from dwindling membership, the club closed in 1972, merging with the East India Club, and moving to the East India's premises in St James's Square. However, the merger has proved to be something of a takeover, as the East India naturally had no remaining members from the long-defunct East India Company, and the Public Schools Club has imported a steady stream of members. Indeed, the East India currently claims some 40% of its members come under the 'J7' rule imported from the Public Schools Club, whereby students leaving their public school at 18 pay a £360 (as of 2014) fee in exchange for membership until the age of 25.

The Badminton Club is a former London gentlemen's club. According to the 8th Duke of Beaufort in his book Driving (1889), the club was founded in 1875 at 100 Piccadilly by a sporting doctor called Hurman. According to the Duke, “this was a thorough coaching establishment, having all the year round a coach, a brake, a team or two... capital stabling and coach-houses, as well as chambers and bedrooms kept for the use of members”.The club was named after Badminton House, the country seat of the Dukes of Beaufort. The 10th Duke was Master of the Horse (1936–1978) to three British monarchs, King Edward VIII, King George VI, and Queen Elizabeth II. Since 1949, Badminton House has hosted the prestigious annual Badminton Horse Trials, a three-day competition event. In 1883, the club also acquired the adjacent premises at 98 and 99 Piccadilly and a new clubhouse was built on the site, designed by the architect Robert William Edis. The principal internal feature was the “Flower Court”, approached through the narrow entrance from Piccadilly. The club flourished so long as the horse remained supreme in London but, by the late 1930s, driving was only the pastime of a few. The club had lost its raison d’etre and decided to disband in 1938. At about that time the Public Schools Club was on the lookout for larger premises and they took over the clubhouse immediately. The clubhouse was finally closed in 1972, when the Public Schools Club merged with the East India Club in St James's Square, and was demolished a few years later. The last surviving parts of the clubhouse are the war memorial plaques for members of the Public Schools Club from World War I and World War II and the Badminton Club’s plaque for World War I, which are still preserved at the East India Club.

The Junior Athenaeum Club was a gentlemen's club in Piccadilly, London, from 1864 to the 1930s, with similar aims to the Athenaeum Club.

The Athenaeum is a family-owned five-star hotel overlooking Green Park in Piccadilly, London.

Down Street, also known as Down Street (Mayfair), is a disused station on the London Underground, located in Mayfair, west London. The Great Northern, Piccadilly and Brompton Railway opened it in 1907. It was latterly served by the Piccadilly line and was situated between Dover Street (now named Green Park) and Hyde Park Corner stations. The station was little used; many trains passed through without stopping. Lack of patronage and proximity to other stations led to its closure in 1932. During the Second World War it was used as a bunker by the Prime Minister, Winston Churchill, and the war cabinet. The station building survives and is close to Down Street's junction with Piccadilly. Part of it is now converted to a retail outlet. London Transport Museum has been running guided tours of the station through its "Hidden London" programme since 2016. The tour covers the history of the site using archives from the museum's collection, with a focus on its Second World War connection.

Cambridge House is a Grade I listed former townhouse in central London, England. It sits on the northern side of Piccadilly at number 94, in the fashionable district of Mayfair. As of 2021, the property is being converted into a luxury hotel and seven residences.The current name of the house comes from one of its former owners, Prince Adolphus, Duke of Cambridge (1774–1850), the seventh son of King George III, but it was originally known as Egremont House and then Cholmondeley House. From about 1865 to 1999, it was the home of the Naval and Military Club and was known colloquially as the In and Out Club, due to its prominently signposted one-way carriage drive.