where to watch live opening ceremony in london?
2012 Summer Olympics
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 The ceremony began at 21 : 00 BST and lasted almost four hours . It was watched by an estimated worldwide television audience of 900 million , becoming the most @-@ viewed Olympic opening ceremony in both the UK and US . The content had largely been kept secret before the performance , despite involving thousands of volunteers and two public rehearsals . The principal sections of the artistic display represented Britain 's Industrial Revolution , National Health Service , literary heritage , popular music and culture , and were noted for their vibrant storytelling and use of music . Two shorter sections drew particular comment , involving a filmed cameo appearance of the Queen , and a live performance by the London Symphony Orchestra joined by comedian Rowan Atkinson . These were widely ascribed to Britain 's sense of humour . The ceremony featured children and young people in most of its segments , reflecting the ' inspire a generation ' aspiration of London 's original bid for the Games . 

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 The adaptation was originally planned to be broadcast on BBC One on Boxing Day , but was later moved to a Sunday night slot on 28 December . It was simulcast in high @-@ definition on BBC HD . 

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 Among the highlights of the 2010 calendar is the screening of the BBC 's nature documentary Planet Earth Live on July 21 , with live Grant Park Symphony Orchestra accompaniment featuring the score by five @-@ time Academy Award @-@ nominated composer George Fenton , who serves as conductor . 

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 Live @-@ action filming took place in England and Scotland for exterior locations and Leavesden Film Studios in Watford for interior locations from February to November 2006 , with a one @-@ month break in June . Post @-@ production on the film continued for several months afterwards to add in visual effects . The film 's budget was reportedly between £ 75 and 100 million ( $ 150 – 200 million ) . Warner Bros. released the film in the United Kingdom on 12 July 2007 and in North America on 11 July , both in conventional and IMAX theatres ; it is the first Potter film to be released in IMAX 3D . 

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 The pre @-@ title sequence begins in Bilbao , Spain , featuring the Guggenheim Museum . After the opening scene , the film moves to London , showcasing the SIS Building and the Millennium Dome on the Thames . Following the title sequence , Eilean Donan castle in Scotland is used by MI6 as a location headquarters . Other locations include Baku , Azerbaijan , the Azerbaijan Oil Rocks and Istanbul , Turkey , where Maiden 's Tower is shown . 
