and pop concert known as the Knebworth Festival has been held in the grounds. The festival first occurred in July 1974 when The Allman Brothers Band, The Doobie Brothers and other artists played to an audience of 60,000 people. Over the years the festival has featured the likes of Pink Floyd, The Rolling Stones, Led Zeppelin, Lynyrd Skynyrd, Queen (their 1986 concert at the venue their last with Freddie Mercury), Paul McCartney, Genesis, Mike Oldfield, The Beach Boys, Deep Purple, Eric Clapton, Elton John, Dire Straits, Robbie Williams, Oasis and Liam Gallagher. The last festival to date was in June 2022. Media Films and television Productions that have been filmed at Knebworth include: Anastasia (1956) - palace of the Empress Danger Man - "The Sanctuary" (1959) The Champions - "The Night People" (1967) The Avengers - "Invasion of the Earthmen" (1967/68) Decline and Fall... of a Birdwatcher (1968) Randall and Hopkirk (Deceased) - "Somebody Just Walked Over My Grave" (1969) Carry On Henry - Exterior shots (1970) The Persuaders! - opening credits (1970/71) The Adventurer - "Action!" (1972) Horror Hospital (1973) Keep It Up Downstairs (1976) - filmed entirely on location as the fictitious 'Cockshute Towers' The Big Sleep (1978) - General Sternwood's country mansion The Great Muppet Caper (1981) - exterior of the Mallory Gallery Sir Henry at Rawlinson End (1980) - interior and exterior The Shooting Party (1985) - filmed entirely on location Haunted Honeymoon (1986) - exterior of the home Porterhouse Blue (1987) - interior and exterior of the home of Sir Cathcart D'Eath The Lair of the White Worm (1988) - exterior of the D'Ampton mansion Batman (1989) - exterior and some interior scenes of Bruce Wayne's manor A Bit of Fry & Laurie - Season Four, Episode 6 ("The Duke of Northhampton") (1995) - sketch The Canterville Ghost (1996) Jane Eyre (1997) - Thornfield Hall Sacred Flesh (1999) - exterior scenes of the convent Harry Potter and the Philosopher's Stone (2001) - the house was used in several pieces of promotional material for the film, and hosted the film's international launch, though no parts of the house were used in shooting of the film itself Agent Cody Banks 2: Destination London (2004) - some scenes in and around the grounds Foyle's War Series 3 Episode 2 ("Enemy Fire") (2004) - as the fictional Digby Manor St Trinian's 2: The Legend of Fritton's Gold (2009) -