Sir Peter Hall, the founder of the Royal Shakespeare Company and former National Theatre director, has died at the age of 86.
He died on Monday at University College hospital in London, surrounded by his family, the National Theatre said.
During his career he staged the English language premiere of Samuel Beckett's Waiting for Godot and the world premiere of Harold Pinter's Homecoming.
Sir Peter had been diagnosed with dementia in 2011.
Sir Peter became director of the National in 1973 and was responsible for the theatre's move from the Old Vic to the purpose-built complex on the South Bank.
He founded the RSC at the age of just 29 in 1960 and led the company until 1968.
Tributes have been paid to Sir Peter by many in the theatre world.
Speaking to Radio 4's World at One, actress Vanessa Redgrave described Sir Peter as "a very extraordinary, interesting and fascinating director".
"He was very mischievous, very handsome, an extremely attractive man who everyone fell in love with... he was everything really, a kind of Shelley in the theatre."
Actor Sir Michael Gambon said Sir Peter "never stopped working".
Several stars have credited Sir Peter with helping launch their careers, Sir Patrick Stewart being among them.
The man who created The Royal Shakespeare Co, Sir Peter Hall, has died. He transformed classical and modern UK theatre and gave me a career.— Patrick Stewart (@SirPatStew) September 12, 2017
Toby Stephens paid tribute, saying Sir Peter gave him his first break as an actor.
so sad to hear of the death of "Sir Peter Hall". He gave me my first break as an Actor. A great Director and shaper of British Theatre.— TOBY STEPHENS (@TobyStephensInV) September 12, 2017
Labour peer and broadcaster Dame Joan Bakewell also tweeted, sharing her "golden memories" of the director.
Peter Hall dies: such golden memories of his student days as an rising director. He gave me my first part!— Joan Bakewell (@JDBakewell) September 12, 2017
Playwright Sir David Hare also praised Sir Peter for his legacy.
Rufus Norris, current director of the National Theatre, said: 'We all stand on the shoulders of giants and Peter Hall's shoulders supported the entirety of British theatre as we know it.
"All of us, including those in the new generation of theatre-makers not immediately touched by his influence, are in his debt. His legendary tenacity and vision created an extraordinary and lasting legacy for us all."
Analysis by BBC arts editor Will Gompertz
Sir Peter Hall was, in many ways, the single most influential figure in British theatre in the second half of the 20th Century.
Not just because he was the man who launched Beckett in Britain, or founded the Royal Shakespeare Company, or transformed the National Theatre from a niche affair operating out of the Old Vic into a three-stage, globally respected, highly ambitious production house - all of which were great achievements.
But what really made him special was what he did for others - the way in which he helped playwrights, actors and fellow directors flourish.
Other former National Theatre directors lined up to pay tribute.
Sir Nicholas Hytner said: "Peter Hall was one of the great figures in British theatrical history, up there in a line of impresarios that stretches back to [Richard] Burbage.
"He was the great theatrical buccaneer of the 20th Century and has left a permanent mark on our culture."
Sir Trevor Nunn described Sir Peter as "not only a thrilling and penetrating director, he was also the great impresario of the age".
And Sir Richard Eyre said Sir Peter "was - and is - the godfather (in both senses) of British theatre".
Greg Doran, director of the RSC, said of his predecessor: "Sir Peter Hall was a colossus, bestriding the British theatre. He was a visionary.
"Not only was he a great director of theatre and opera, he was a politician who fought for the arts... his greatest legacy without doubt will be judged to be the formation of the Royal Shakespeare Company."
After leaving the National Theatre in 1988, Sir Peter formed the Peter Hall Company (1988 - 2011) and in 2003 became the founding director of the Rose Theatre Kingston.
Throughout his career, Sir Peter was also a champion of public funding for the arts.
His other works included the London and Broadway premieres of Alan Ayckbourn's Bedroom Farce (1977) and the 1987 production of Antony and Cleopatra, starring Dame Judi Dench and Anthony Hopkins.
He also directed his daughter, the actress Rebecca Hall, in a 2003 production of Shakespeare's As You Like It.
Sir Peter's last production at the National Theatre was Twelfth Night in 2011.
He was also a renowned opera director and was the artistic director of Glyndebourne Festival Opera between 1984 and 1990.
Gus Christie, Glyndebourne's executive chairman, said in a statement: "It was a golden era for Glyndebourne when Peter was artistic director. He was loved by both audiences and artists. The productions he created were timeless."
In 1983, Sir Peter staged Wagner's Ring Cycle in Bayreuth, Germany, to honour the 100th anniversary of the composer's death.
Sir Peter is survived by his wife Nicki, children Christopher, Jennifer, Edward, Lucy, Rebecca and Emma, and nine grandchildren.
His former wives Leslie Caron, Jacqueline Taylor and Maria Ewing also survive him.
There will be a private family funeral, with details of a memorial service to be announced at a later date.