The One Ronnie was a one-off comedy television sketch show that aired on BBC One

BBC One

BBC One is the flagship television channel of the British Broadcasting Corporation in the United Kingdom. It was launched on 2 November 1936 as the BBC Television Service, and was the world's first regular television service with a high level of image resolution...

 on Christmas Day 2010

2010 in British television

This is a list of events taking place in 2010 related to British television.-Events:-BBC:-ITV:-Channel 4:-Five:-Subscription Channels:-New Channels:-Defunct Channels:-Changes of network affiliation:...

 to celebrate the 80th birthday of Ronnie Corbett

Ronnie Corbett

Ronald Balfour "Ronnie" Corbett, OBE is a Scottish actor and comedian of Scottish and English parentage who had a long association with Ronnie Barker in the British television comedy series The Two Ronnies...

. It featured sketches between Corbett and Lionel Blair

Lionel Blair

Lionel Blair is a British actor, choreographer, tap dancer and television presenter. He is the son of Myer Ogus and Deborah Greenbaum...

, Rob Brydon

Rob Brydon

Rob Brydon is a BAFTA-nominated Welsh actor, comedian, radio and television presenter, singer and impressionist...

, James Corden

James Corden

James Kimberley Corden is an English actor, television writer, producer and presenter. He is co-creator and star of BBC comedy shows Gavin & Stacey and Horne & Corden, and acted in the 2009 film Lesbian Vampire Killers....

, Jon Culshaw

Jon Culshaw

Jonathan Peter Culshaw is an English impressionist and comedian. He was educated at St Bede's RC High School, Ormskirk and St John Rigby College, in Orrell, Wigan....

, Harry Enfield

Harry Enfield

Henry Richard "Harry" Enfield is a BAFTA-winning English comedian, actor, writer and director.-Early life:...

, Jocelyn Jee Esien

Jocelyn Jee Esien

Jocelyn Jee Esien is a Black British comedian, of Nigerian origin, perhaps best known for her part in the hidden camera show 3 Non Blondes, and her own comedy sketch show, Little Miss Jocelyn.-Biography:...

, Miranda Hart

Miranda Hart

Miranda Katharine Hart Dyke , known professionally as Miranda Hart, is an English actress, writer and stand-up comedienne. She writes and stars in the BBC sitcom Miranda...

, Robert Lindsay

Robert Lindsay (actor)

Robert Lindsay is an English actor who is best known for his television work, especially his roles of Wolfie Smith in Citizen Smith, Michael Murray in G.B.H., Captain Sir Edward Pellew in Hornblower and Ben Harper in My Family which has been on television screens since 2000.-Early life:Lindsay was...

, Matt Lucas

Matt Lucas

Matthew Richard "Matt" Lucas is an English comedian, screenwriter and actor best known for his acclaimed work with David Walliams in the television show Little Britain; as well as for his portrayals of the scorekeeping baby George Dawes in the comedy panel game Shooting Stars, Tweedledee and...

, Catherine Tate

Catherine Tate

Catherine Tate is an English actress, writer, and comedian. She has won numerous awards for her work on the sketch comedy series The Catherine Tate Show as well as being nominated for an International Emmy Award and four BAFTA Awards...

, David Walliams

David Walliams

David Edward Walliams is an English comedian, writer and actor, known for his partnership with Matt Lucas on the TV sketch show Little Britain and its predecessor Rock Profile...

 and Richard Wilson. Charlotte Church

Charlotte Church

Charlotte Maria Church is a Welsh singer-songwriter, actress and television presenter. She rose to fame in childhood as a classical singer before branching into pop music in 2005. By 2007, she had sold more than 10 million records worldwide including over 5 million in the United States...

 also appeared as herself.
The title was a reference to Corbett's long-running sketch show The Two Ronnies

The Two Ronnies

The Two Ronnies is a British sketch show that aired on BBC1 from 1971 to 1987. It featured the double act of Ronnie Barker and Ronnie Corbett, the "Two Ronnies" of the title.-Origins:...

which also featured Ronnie Barker

Ronnie Barker

Ronald William George "Ronnie" Barker, OBE was a British actor, comedian, writer, critic, broadcaster and businessman...

, who died in 2005.