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Tate is an institution that houses, in a network of four art galleries, the United Kingdom's national collection of British art, and international modern and contemporary art. It is not a government institution, but its main sponsor is the UK Department for Digital, Culture, Media and Sport.  
The name "Tate" is used also as the operating name for the corporate body, which was established by the Museums and Galleries Act 1992 as "The Board of Trustees of the Tate Gallery".
The gallery was founded in 1897 as the National Gallery of British Art. When its role was changed to include the national collection of modern art as well as the national collection of British art, in 1932, it was renamed the Tate Gallery after sugar magnate Henry Tate of Tate & Lyle, who had laid the foundations for the collection. The Tate Gallery was housed in the current building occupied by Tate Britain, which is situated in Millbank, London. In 2000, the Tate Gallery transformed itself into the current-day Tate, which consists of a network of four museums: Tate Britain, which displays the collection of British art from 1500 to the present day; Tate Modern, also in London, which houses the Tate's collection of British and international modern and contemporary art from 1900 to the present day; Tate Liverpool (founded in 1988), which has the same purpose as Tate Modern but on a smaller scale; and Tate St Ives in Cornwall (founded in 1993), which displays modern and contemporary art by artists who have connections with the area. All four museums share the Tate Collection. One of the Tate's most publicised art events is the awarding of the annual Turner Prize, which takes place at Tate Britain every other year (taking place at venues outside of London in alternate years). 
The original Tate was called the National Gallery of British Art, situated on Millbank, Pimlico, London at the site of the former Millbank Prison. The idea of a National Gallery of British Art was first proposed in the 1820s by Sir John Leicester, Baron de Tabley. It took a step nearer when Robert Vernon gave his collection to the National Gallery in 1847. A decade later John Sheepshanks gave his collection to the South Kensington Museum (later the Victoria & Albert Museum), known for years as the National Gallery of Art (the same title as the Tate Gallery had). Forty years later Sir Henry Tate who was a sugar magnate and a major collector of Victorian art, offered to fund the building of the gallery to house British Art on the condition that the State pay for the site and revenue costs. Henry Tate also donated his own collection to the gallery. It was initially a collection solely of modern British art, concentrating on the works of modern—that is Victorian era—painters. It was controlled by the National Gallery until 1954.
Following the death of Sir Hugh Lane in the sinking of the RMS Lusitania in 1915, an oversight in his will meant that the collection of European modern art he had intended to go to Dublin controversially went to the Tate instead, which expanded its collection to include foreign art and continued to acquire contemporary art. In 1926 and 1937, the art dealer and patron Joseph Duveen paid for two major expansions of the gallery building. His father had earlier paid for an extension to house the major part of the Turner Bequest, which in 1987 was transferred to a wing paid for by Sir Charles Clore. Henry Courtauld also endowed Tate with a purchase fund. By the mid 20th century, it was fulfilling a dual function of showing the history of British art as well as international modern art. In 1954, the Tate Gallery was finally separated from the National Gallery.
During the 1950s and 1960s, the visual arts department of the Arts Council of Great Britain funded and organised temporary exhibitions at the Tate Gallery including, in 1966, a retrospective of Marcel Duchamp. Later, the Tate began organising its own temporary exhibition programme. In 1979 with funding from a Japanese bank a large modern extension was opened that would also house larger income generating exhibitions. In 1987, the Clore Wing opened to house the major part of the Turner bequest and also provided a 200-seat auditorium. (The "Centenary Development," in 2001, provided improved access and public amenities)
In 1988, an outpost in north west England opened as Tate Liverpool. This shows various works of modern art from the Tate collection as well as mounting its own temporary exhibitions. In 2007, Tate Liverpool hosted the Turner Prize, the first time this has been held outside London. This was an overture to Liverpool's being the European Capital of Culture 2008.
In 1993, another offshoot opened, Tate St Ives. It exhibits work by modern British artists, particularly those of the St Ives School. Additionally the Tate also manages the Barbara Hepworth Museum and Sculpture Garden, which opened in 1980.
Neither of these two new Tates had a significant effect on the functioning of the original London Tate Gallery, whose size was increasingly proving a constraint as the collection grew. It was a logical step to separate the "British" and "Modern" aspects of the collection, and they are now housed in separate buildings in London. The original gallery is now called Tate Britain and is the national gallery for British art from 1500 to the present day, as well as some modern British art. Tate Modern, in Bankside Power Station on the south side of the Thames, opened in 2000 and now exhibits the national collection of modern art from 1900 to the present day, including some modern British art.
In the late 2000s, the Tate announced a new development project to the south of the existing building. According to the museum this new development would "transform Tate Modern. An iconic new building will be added at the south of the existing gallery. It will create more spaces for displaying the collection, performance and installation art and learning, all allowing visitors to engage more deeply with art, as well as creating more social spaces for visitors to unwind and relax in the gallery."  Arts philanthropist John Studzinski donated more than £6 million to the project.   The extension to Tate Modern opened in 2016 as The Switch House and, in 2017, was renamed the Blavatnik Building after Anglo-Ukrainian billionaire Sir Leonard Blavatnik, who contributed a "substantial" amount of its £260m cost.
The youngest person to be awarded a residency at the Tate is Travis Alabanza. 
Tate Digital is the name of the department responsible for Tate's website and other public-facing digital projects. Since its launch in 1998, Tate's website site has provided information on all four physical Tate galleries (Tate Britain, Tate St Ives, Tate Liverpool and Tate Modern) under the same domain. Other resources include illustrated information on all works in Tate's Collection of British and Modern, Contemporary and international art, all of Tate's research publications, and articles from the magazine Tate Etc. BT was the primary sponsor of Tate Online from 2001 to 2009.
Tate Online has been used as a platform for Internet art exhibits, termed Net Art,  which are organised as part of Tate's Intermedia Art initiative  covering new media art. 13 net art exhibitions have been shown since the initiative started in 2000 including Tate in Space  (2002) which was nominated in the Interactive Art category for the 2003 BAFTA Interactive awards.
Tate receives annual funding from the Department for Digital, Culture, Media and Sport. It is administered by a board of trustees, who are responsible for the running of the gallery and appoint the Director (for a period of seven years). Under the Charities Act 1993, the Tate is an exempt charity accountable directly to Government rather than the Charity Commission for financial returns etc. However, the Trustees are still expected to follow the broad responsibilities of charity trustees, and may be subject to Charity Commission oversight on these elements of their activities.
Maria Balshaw has been Director of Tate since 2017,  succeeding Sir Nicholas Serota (1988 to 2017). Under the Director, Kerstin Mogull has been Managing Director of Tate since January 2014,  succeeding Alex Beard.
Various bodies have been set up to support the Tate including Tate Members for the general public, where a yearly fee gives rights such as free entry to charging exhibitions and members' rooms. There is also Tate Patrons for a higher subscription fee and the Tate Foundation. There are a number of corporate sponsors. In addition individual shows are often sponsored.
Tate now spends around £1 million of its general funds each year on purchasing acquisitions and their related costs. The Outset Contemporary Art Fund was established in 2003, by Tate patrons Yana Peel and Candida Gertler. In collaboration with the Frieze Art Fair, the fund buys works from the fair for the Tate's collections. Other funds for acquisitions are raised by Tate funding groups such as the Members, the Patrons and the American Patrons of Tate and its sub-committees, the North American Acquisitions Committee and Latin American Acquisitions Committee. The American Patrons were renamed in 2013 to reflect their expanding geographical base of support; since 1999, this support group alone has raised more than $100 million. 
In 2010, a photography acquisitions committee was launched.  In 2012, the Tate established a South Asian acquisitions committee to collect contemporary and modern art from India and surrounding countries, as well as a committee for works from Russia, Eastern Europe and the CIS (Commonwealth of Independent States). 
The Tate logo was designed by international brand consultancy Wolff Olins in 2000 as part of a larger rebranding effort focused around the idea "look again, think again." The museum uses a range of logos that move in and out of focus, "suggesting the dynamic nature of Tate – always changing but always recognizable"  Variations include a standard logo, a blurred version, a faded version and a halftone version consisting of dots rather than smooth fading.  An update on the brand, designed by North, was released in 2016. 
The head of the Tate (formally the National Gallery of British Art and the Tate Gallery) is currently titled the Director. Until 1917, they were styled the Keeper. 
Tate Modern is an art gallery located in London. It houses the United Kingdom's national collection of international modern and contemporary art, and forms part of the Tate group together with Tate Britain, Tate Liverpool and Tate St Ives. It is located in the former Bankside Power Station, in the Bankside area of the London Borough of Southwark.
Stuckism is an international art movement founded in 1999 by Billy Childish and Charles Thomson to promote figurative painting as opposed to conceptual art. By May 2017 the initial group of 13 British artists had expanded to 236 groups in 52 countries.
The National Gallery is an art museum in Trafalgar Square in the City of Westminster, in Central London, England. Founded in 1824, in Trafalgar Square since 1838, it houses a collection of over 2,300 paintings dating from the mid-13th century to 1900. The current Director of the National Gallery is Gabriele Finaldi.
The Turner Prize, named after the English painter J. M. W. Turner, is an annual prize presented to a British visual artist. Between 1991 and 2016, only artists under the age of 50 were eligible. The prize is awarded at Tate Britain every other year, with various venues outside of London being used in alternate years. Since its beginnings in 1984 it has become the UK's most publicised art award. The award represents all media.
Sir Gordon Howard Eliott Hodgkin was a British painter and printmaker. His work is most often associated with abstraction.
Sir Nicholas Andrew Serota, is an English art historian and curator, who served as the Director of the Tate from 1988 to 2017. He is currently Chair of Arts Council England, a role which he has held since February 2017.
The Whitechapel Gallery is a public art gallery in Whitechapel on the north side of Whitechapel High Street, in the London Borough of Tower Hamlets. The original building, designed by Charles Harrison Townsend, opened in 1901 as one of the first publicly funded galleries for temporary exhibitions in London. The building is a notable example of the British Modern Style. In 2009 the gallery approximately doubled in size by incorporating the adjacent former Passmore Edwards library building. It exhibits the work of contemporary artists and organizes retrospective exhibitions and other art shows.
Alexander Robert "Sandy" Nairne is an English historian and curator. From 2002 until February 2015 he was the director of the National Portrait Gallery, London.
The Stuckists Punk Victorian was the first national gallery exhibition of Stuckist art. It was held at the Walker Art Gallery and Lady Lever Art Gallery in Liverpool from 18 September 2004 to 20 February 2005 and was part of the 2004 Liverpool Biennial.
John Bourne is a British artist and painter, living and working in Wales, and a member of the Stuckists art movement. He founded the Wrexham Stuckists group in 2001 and has been exhibited in the group's shows since then, including The Stuckists Punk Victorian. He has also taken part in Stuckist demonstrations against the Turner Prize. The subject matter for his paintings, which are done in a simplified style, comes from his memories.
Sir Alan Bowness CBE was a British art historian, art critic, and museum director. He was the director of the Tate Gallery between 1980 and 1988.
Stuckist demonstrations since 2000 have been a key part of the Stuckist art group's activities and have succeeded in giving them a high-profile both in Britain and abroad. Their primary agenda is the promotion of painting and opposition to conceptual art.
Go West is the title of the first exhibition by Stuckist artists in a commercial London West End gallery. It was staged in Spectrum London gallery in October 2006. The show attracted media interest for its location, for the use of a painting satirising Sir Nicholas Serota, Director of the Tate gallery, and for two paintings of a stripper by Charles Thomson based on his former wife, artist Stella Vine.
Graves Art Gallery is an art gallery in Sheffield, England. The gallery is located above the Central Library in Sheffield city centre. It houses permanent displays from the city’s historic and contemporary collection of British and European art along with a programme of temporary exhibitions.
Sir Nicholas Serota Makes an Acquisitions Decision is one of the paintings that was made as a part of the Stuckism art movement, and is recognized as a "signature piece" for the movement, It was painted by the Stuckism co-founder Charles Thomson in 2000, and has been exhibited in a number of shows since, as well as being featured on placards during Stuckist demonstrations against the Turner Prize.
Tate Britain, known from 1897 to 1932 as the National Gallery of British Art and from 1932 to 2000 as the Tate Gallery, is an art museum on Millbank in the City of Westminster in London, England. It is part of the Tate network of galleries in England, with Tate Modern, Tate Liverpool and Tate St Ives. It is the oldest gallery in the network, having opened in 1897. It houses a substantial collection of the art of the United Kingdom since Tudor times, and in particular has large holdings of the works of J. M. W. Turner, who bequeathed all his own collection to the nation. It is one of the largest museums in the country. The museum had 525,144 visitors in 2021, an increase of 34 percent from 2020 but still well below pre- COVID-19 pandemic levels. but still ranked 50th on the list of most-visited art museums in the world.
Sir Norman Robert Reid was an arts administrator and painter. He served as the Director of the Tate Gallery from 1964 to 1979.
The Contemporary Art Society (CAS) is an independent charity that champions the collecting of outstanding contemporary art and craft for UK museum collections. Since its founding in 1910 the organisation has donated over 10,000 works to museums across the UK. From the 1930s the Society also donated works to Commonwealth museums, but since 1989 the focus has remained exclusively on UK institutions.
Maria Jane Balshaw CBE is director of the Tate art museums and galleries. The appointment was confirmed by the UK Prime Minister on 16 January 2017, making her the first female director of the Tate.
Penelope Curtis is a British art historian and curator. Fom 2015 to 2020 she was the director of Lisbon's Museu Calouste Gulbenkian, and from 2010 to 2015 director of Tate Britain. She is the author of several monographs on sculpture and has written widely at the invitation of contemporary artists.