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Robbie Williams and Gary Barlow
Sightings London: Robbie Williams and Gary Barlow at BBC radio one, London at the Celebrity Sightings in London at London England. (Footage by WireImage Video/GettyImages)
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Luke Roberts
who plays registrar Joseph Byrne in BBC's 'Holby City' leaves ITV Studios after appearing on ITV's Daybreak Luke Roberts on January 10, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Olly Murs
Olly Murs leaves BBC Radio Two Studios SIGHTED: Olly Murs on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Nicole Scherzinger
Nicole Scherzinger leaves BBC Radio Two Studios SIGHTED: Nicole Scherzinger on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Nicole Scherzinger
Nicole Scherzinger arrives at BBC Radio Two Studios SIGHTED: Nicole Scherzinger on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Jessie J
Jessie J arrives at BBC Radio Two Studios SIGHTED: Jessie J on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: George Michael
George Michael arrives at BBC Radio Two Studios SIGHTED: George Michael on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: George Michael
George Michael leaves BBC Radio Two Studios SIGHTED: George Michael on March 04, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Andi Peters
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Andi Peters arrives as a guest Andi Peters at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Chris Moyles
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Chris Moyles 28 hours into his show Chris Moyles at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Jon Culshaw
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Jon Culshaw arrives as a guest Jon Culshaw at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Outside GV
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Outside general view Outside GV at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Chris Moyles
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Chris Moyles arrives to start the show Chris Moyles at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Craig David
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Craig David arrives as a guest Craig David at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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Sarah Cox
BBC RADIO 1'S LONGEST SHOW EVER FOR COMIC RELIEF - Sarah Cox arrives as a guest Sarah Cox at BBC Radio One Studios on March 17, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: The Scarletz
The Scarletz cooking pancakes on Shrove Tuesday outside BBC Radio One. SIGHTED: The Scarletz on March 08, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Gregg Allman
Gregg Allman leaves BBC Radio Two. SIGHTED: Gregg Allman at BBC Radio Studios on February 10, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Simon Pegg
Simon Pegg leaves BBC Radio Two. SIGHTED: Simon Pegg at BBC Radio Studios on February 11, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Ellie Goulding
Ellie Goulding leaves BBC Radio One. SIGHTED: Ellie Goulding at BBC Radio Studios on February 11, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Karen Brady
Karren Brady leaves BBC Radio Two. SIGHTED: Karren Brady on February 07, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Chris Evans & Natasha Shishmanian
Chris Evans, his wife Natasha Shishmanian and son Noah leave BBC Radio Two Studios. SIGHTED: Chris Evans & Natasha Shishmanian at BBC Radio Two Studios on March 25, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: McFly
McFly arrive at BBC Radio One Studios SIGHTED: McFly at BBC Radio One Studios on March 31, 2011 in London, England (Footage by WireImage Video/Getty Images)
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SIGHTED: Omid Djalilli
Omid Djalilli leaves BBC Radio Two Studios SIGHTED: Omid Djalilli at BBC Radio Two Studios on April 07, 2011 in London, England (Footage by WireImage Video/Getty Images)
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INTERVIEW : Zane Lowe
INTERVIEW : Zane Lowe talks about Winter Wonderland and his favourite interviews at the BBC along with his Christmas wish. INTERVIEW : Zane Lowe at Hyde Park on November 17, 2011 in London, England (Footage by WireImage Video/Getty Images)