Prestat

Floris (also J. Floris Ltd or Floris of London Holdings Ltd) is the oldest English retailer of fragrance and toiletries and is still family owned and run today by the 8th and 9th generations of the family.

Princes Arcade is an arcade of shops running between Piccadilly and Jermyn Street in central London. It is home to a number of small menswear shops and boutiques.The arcade is located on the site of the former Princes Hotel, designed by Edward Robert Robson for the Royal Institute of Painters in Water Colours and opened in April 1883. A westward extension of the hotel was built between 1911 and 1913, which is now Nos. 39-40 Jermyn Street. The arcade was constructed between 1929 and 1933, linking the two streets. The hotel was subsequently converted into offices.The arcade was refurbished by the Crown Estate in 2018 as "a space for innovative retail brands".

Tramp is a private, members-only nightclub located on Jermyn Street in central London, England. It was founded in 1969 by Johnny Gold, Bill Ofner and Oscar Lerman. The club built a reputation for discretion, banning photography and gossip writers from inside, and is popular with celebrities.

Forbidden London (or Forbidden London Clubs) was a public relations company based at 91 Jermyn Street in the London district of St James's between 2008 and 2012 during which time it was owned by James Wilson and David West. The company promoted the nightlife sector, particularly by utilising the Internet to attract guests to events at leading nightclubs in Soho and Mayfair. Rivals at the time of the inception of Forbidden London included London Parties, operated by Nick House - future partner in Mahiki; and Met Parties. The company was notable for staging the first performance of Vivienne Westwood's Active Resistance to Propaganda manifesto at the Bloomsbury Ballroom on Friday 4 December 2009. The performance starred Vivienne Westwood and Michelle Ryan. As the company was based above the nightclub and Russian restaurant at 91 Jermyn Street, both owned by David West, the company was named in online conspiracy theories related to the poisoning of Alexander Litvinenko. This escalated following the unlawful killing of David West although the two incidents were found to be unconnected. In 2010 Forbidden London organised Raef Bjayou's 007 party for UK TV show Party Wars at Amika nightclub in High Street Kensington. Raef came second in the show. In 2011 Forbidden London was nominated for Best Entertainment by Spear's for their Design for Living Awards 2011.In August 2011 Forbidden London announced 1000 job opportunities for young people in London.On 23 October 2017, the 60th anniversary of the Hungarian Revolution of 1956, it was announced on the Forbidden London Facebook page that the brand would relaunch.

Prince's Hall was a concert venue in Piccadilly, London. It was part of the premises of the Royal Institute of Painters in Water Colours, at 190–195 Piccadilly, situated behind the galleries where annual exhibitions of the Institute took place. The building was opened by the Prince and Princess of Wales in 1883.In 1900 the Prince's Hall was joined with the Prince's Hotel to the rear, and became a restaurant. Prince's Hotel, built about 1898, was at 36–38 Jermyn Street, which runs parallel to Piccadilly to the south. From 1929 to 1933 there was extensive alteration: the hotel was converted into offices and business premises, and Princes Arcade was constructed between Piccadilly and Jermyn Street.

The Scotch of St. James is a nightclub situated at Mason's Yard, London.Tucked away at the bottom of an alley it served as a prominent nightclub, live music venue and historically significant meeting place for London's rock elite in the 1960s. The club opened on 14 July 1965 at the height of 1960s swinging London scene and soon replaced the Ad Lib Club which closed in November 1966, as a meeting place for the swinging London set and rock musicians. The heritage of the Scotch St. James was referenced when it was relaunched after 25 years of closure in 2012.

Paxton & Whitfield are one of the oldest cheesemongers in England. Their main shop is located at 93 Jermyn Street, London.

The Cavendish Hotel is a modern 4-star, 230-bedroom, luxury hotel in St James's, London, United Kingdom, facing the restaurant front of Fortnum and Mason on Piccadilly. Across Piccadilly is Mayfair. It is currently known as "The Cavendish London" and it is owned by CapitaLand. Its main entrance is on Jermyn Street, and a side entrance is on Duke Street, St James's. Jermyn Street is an established retail and urban leisure street which has bespoke gentlemen's clothing stores, shoe/bootmakers and barber shops. The hotel gained notoriety during the 1902–1952 management of the self-made hotelier and socialite Rosa Lewis, who was also known as the "Queen of Cooks" and "The Duchess of Jermyn Street"; damaged in the London Blitz, it was torn down in 1962. The present edition of the hotel was built on the site in 1966.

Westminster St James (or St James Piccadilly) was a civil parish in the metropolitan area of London, England. The creation of the parish followed the building of the Church of St James, Piccadilly, in 1684. After several failed attempts, the parish was formed in 1685 from part of the ancient parish of St Martin in the Fields in the Liberty of Westminster and county of Middlesex. It included part of the West End of London, taking in sections of Soho, Mayfair and St James's. Civil parish administration was in the hands of a select vestry until the parish adopted the Vestries Act 1831. The vestry was reformed again in 1855 by the Metropolis Management Act. In 1889 the parish became part of the County of London and the vestry was abolished in 1900, replaced by Westminster City Council. The parish continued to have nominal existence until 1922.

Hatchards claims to be the oldest bookshop in the United Kingdom, founded on Piccadilly in 1797 by John Hatchard. After one move, it has been at the same location on Piccadilly next to Fortnum & Mason since 1801, and the two stores are also neighbours in St. Pancras railway station as of 2014. It has a reputation for attracting high-profile authors and holds three Royal Warrants granted by the Queen, the Prince of Wales and the Duke of Edinburgh respectively.

Piccadilly Market at St James's Church Piccadilly is a market in the St James's district of the City of Westminster. It is open six days a week and occupies the courtyard on the North side of St James's Church, Piccadilly. It is close to Piccadilly Circus, Fortnum & Mason and The Ritz London Hotel.

The Franses Tapestry Archive and Library in London is devoted to the study of European tapestries and figurative textiles. It is the world’s largest academic research resource on the subject.