Holy Trinity Church, Marylebone

Great Portland Street is a London Underground station near Regent's Park. It is between Baker Street and Euston Square on the Hammersmith & City, Circle and Metropolitan lines. Great Portland Street station is listed as a building of National Significance and lies in Travelcard Zone 1.

The Greene Man is a public house in London's Euston Road. It was formerly known as the Green Man (and Porters Bar) and before that, the Farthing Pie House or Pye House as mutton pies could be bought there for a farthing. When it was established in the 18th century, the area was rural and so the surroundings were farm fields and pleasure gardens. The place was then frequented by notable artists and writers including William Blake and Richard Wilson.

A memorial bust of John F. Kennedy stands in the lobby of International Students House on Great Portland Street, London, England, and is visible from the outside through the glass doors. It was moved there in April 2019 from its original location on the Marylebone Road, to the west of Great Portland Street underground station, after it was vandalised in 2017.

International Students House, London (colloquially shortened to ISH said as one word, "ish") is a set of lodgings for 700 British and overseas students in London. It permanently occupies two large buildings in streets one short block south of Regent's Park, one of which, the headquarters, faces Park Crescent which in turn across a square green faces the park itself. It operates as a financially self-supporting registered charity under a board of trustees.Approximately ten students apply for every place. Selection is distinct from that of London's colleges and universities where selection must also be gained. It is on the basis of a student's "demonstrated willingness to participate and become involved in the life of the House." Each year, the House admits Fulbright scholars and students attending places of advanced learning including King's College London, LSE, Imperial College London, UCL, SOAS, London Business School, The Royal Academy of Music, RADA, Goldsmiths, The Architectural Association School of Architecture and BPP Law School, among others. Annually, the House, together with its partners, awards residential scholarships of over £800,000. ISH also has 70,000 non-resident members, which makes up a large proportion of the international students in London.

The Portland Hospital for Women and Children is a private maternity hospital on Great Portland Street, City of Westminster, London, England, owned by the Hospital Corporation of America.

Greenwell Street, formerly Buckingham Street, is located in the Fitzrovia district of the City of Westminster in London. It was built in the late eighteenth century and runs between Bolsover Street in the east and Cleveland Street in the west. Great Titchfield Street joins it on its south side. On the south side is the grade II listed George and Dragon public house (c.1850) and the site of the home of the sculptor John Flaxman, the location of which is marked by a plaque. There are also plaques to the chemist William Hyde Wollaston who worked on platinum in his laboratory there, and from the former buildings of the Royal National Orthopaedic Hospital whose outpatient assessment centre is located in a new building on the north side on the corner with Bolsover Street. The plasterer and scagliola manufacturer Vincent Bellman and his successors in trade had their business at number 14 from 1832 until 1877 where at one stage they employed 68 men and boys. The street was badly damaged by German bombing during the Second World War and has been subject to redevelopment in the post-war period so that, apart from the pub, all of its buildings are of modern construction.

The New Diorama Theatre is an eighty-seat theatre near Regent's Park in the London Borough of Camden, opened in 2010. The theatre received two Peter Brook awards during the first two years of its programming. Its artistic director is the playwright David Byrne.

The Crown Estate Paving Commission (CEPC) is the body responsible for managing certain aspects of the built environment around Regent's Park, London. It was established by statute in 1824. It fulfills some local government functions, and is one of the few bodies in the United Kingdom still empowered to levy rates on residential property. Although it has local government functions and tax-raising powers, its members are not elected but are appointed by the Lords of the Treasury. It is a separate body from the Crown Estate, which holds the freehold of Regent's Park.

The British Society of Gastroenterology (BSG) is a British professional organisation of gastroenterologists, surgeons, pathologists, radiologists, scientists, nurses, dietitians and others amongst its members, which number over 3,000. It was founded in 1937, and is a registered charity. Its offices are in Regent's Park, London.The society is an organisation focused on the promotion of gastroenterology within the United Kingdom. It is involved with the training of gastroenterologists in the United Kingdom, and with original research into gastroenterology. The society also produces information for patients with gastrointestinal diseases.The society publishes the medical journals Gut, BMJ Open Gastroenterology and Frontline Gastroenterology.It produces clinical practice guidelines and various other documents relevant to the field of gastroenterology including diseases of the gastrointestinal tract, liver, pancreas and biliary tract, and the disciplines of gastrointestinal endoscopy, nutrition, pathology and gastrointestinal surgery.The society holds an Annual General Meeting during which original research, updates and reviews in gastroenterology and hepatology are presented. Named lectures include the Sir Arthur Hurst lecture and the Sir Francis Avery Jones BSG Research medallist. Recent presidents have been Hermon Dowling (1996–1997), Chris Hawkey (2010), Jon Rhodes (2011–12), Ian Gilmore (2013–14), Ian Forgacs (2014–16), Martin Lombard (2016–18) and Cathryn Edwards (2018–20). The current president is Alastair McKinlay.The British Society of Gastroenterology is a National Society Member of the United European Gastroenterology.

The George and Dragon is a Grade II listed public house at 151 Cleveland Street, Fitzrovia, London W1T 6QN.It was built in about 1850.

The Royal College of Physicians (RCP) is a British professional membership body dedicated to improving the practice of medicine, chiefly through the accreditation of physicians by examination. Founded by royal charter from King Henry VIII in 1518, the RCP is the oldest medical college in England. It set the first international standard in the classification of diseases, and its library contains medical texts of great historical interest. The college is sometimes referred to as the Royal College of Physicians of London to differentiate it from other similarly named bodies. The RCP drives improvements in health and healthcare through advocacy, education and research. Its 40,000 members work in hospitals and communities across over 30 medical specialties with around a fifth based in over 80 countries worldwide. The college hosts six training faculties: the Faculty of Forensic and Legal Medicine, the Faculty for Pharmaceutical Medicine, the Faculty of Occupational Medicine the Faculty of Public Health, the Faculty of Sport and Exercise Medicine and the Faculty of Physician Associates. The RCP's home in Regent's Park is one of the few post-war buildings to be granted Grade I listed status. In 2016 it was announced that the RCP was to open a new home in the north of England at The Spine, a new building in the Liverpool Knowledge Quarter in Liverpool. The Spine is set to open in 2021.

Bolsover Street is in the Parish of St Marylebone in London’s West End. In administrative terms it lies within the City of Westminster's Marylebone High Street Ward and is partly in the Harley Street Conservation Area whilst also sitting on the edges of the Regents Park and East Marylebone Conservation Areas.The predominant land use on Bolsover Street is office business use, mixed with hotels (and YHA Hostel), medical and professional activity. Numerous communications, new media and broadcast entities are located in offices on the street. Residential presence on the street is strongest at its northern and closest end to Regent's Park and Regent's Place. The Royal National Orthopaedic Hospital has been present on the street since 1907.