Question: What is the name of the Scottish actor who has played the part of 'Doctor Who', and who played the part of Daniel in a British radio sitcom as part of a childless couple?

Context paragraphs:
Pepsi Chart: The Pepsi Chart (previously known as "The Pepsi Network Chart Show") was a networked Sunday afternoon Top 40 countdown on UK radio that started life on 1 August 1993 with Neil 'Doctor' Fox hosting the show live from the Capital Radio studios in London.  The Pepsi Chart show carried an emphasis in fun and was the UK's first personality-led chart show: the presenter was live and exciting, big-prize competitions were held, and the Top 10 was official - i.e. it was entirely sales-based resulting in a shared song order with the BBC's Radio 1 Official Chart Show and also theoretically played out at the same time.

David Tennant: David Tennant (born David John McDonald; 18 April 1971) is a Scottish actor and voice actor.  He is best known for his roles as the Tenth Doctor in the British television series "Doctor Who", Alec Hardy in "Broadchurch", Giacomo Casanova in the TV serial "Casanova", Kilgrave in "Jessica Jones", and Barty Crouch, Jr.  in the film "Harry Potter and the Goblet of Fire".  In addition to his appearances on screen, he has worked as a voice actor and in theatre, including Prince Hamlet in a critically acclaimed 2008 stage production of "Hamlet" and as the voice of Scrooge McDuck in the new "DuckTales" series starting in 2017.  In January 2015, Tennant received the National Television Award for Special Recognition.

Space Hacks: Space Hacks was a British radio sitcom produced by the BBC, first aired in February 2007.  It is the first direct commission by BBC7, a UK digital radio station.  Two series of four episodes each were produced.  All episodes were exclusively broadcast on BBC7.

Peter Birrel: Peter Birrel (19 July 1935 – 23 June 2004) was an English actor who played numerous bit parts on British television for nearly forty years.  He appeared in the "Doctor Who" story "Frontier in Space" in 1973, as well as in the documentary "I Was a 'Doctor Who' Monster".  He also appeared in the first series of "Alexander the Greatest".  His film credits included "Freelance" (1971), "Arch of Triumph" (1984), and the television miniseries "Freud" (1984), "War and Remembrance" (1988) and "Around the World in 80 Days" (1989).  In het late seventies he played a guest-role in George & Mildred as Georges brother Charlie Roper in the eppisode "A Military Pickle."

Into the Woods (film): Into the Woods is a 2014 American musical fantasy film directed by Rob Marshall, and adapted to the screen by James Lapine from his and Stephen Sondheim's Broadway musical of the same name.  A Walt Disney Pictures production, it features an ensemble cast that includes Meryl Streep, Emily Blunt, James Corden, Anna Kendrick, Chris Pine, Tracey Ullman, Christine Baranski, Lilla Crawford, Daniel Huttlestone, MacKenzie Mauzy, Billy Magnussen, and Johnny Depp.  Inspired by the Grimm Brothers' fairy tales of "Little Red Riding Hood", "Cinderella", "Jack and the Beanstalk", and "Rapunzel", the film is a fantasy genre centered on a childless couple, who set out to end a curse placed on them by a vengeful witch.  Ultimately, the characters are forced to rectify the consequences of their actions.

The Change (radio show): The Change was a short-lived British radio Sitcom that originally aired from November 2001 - November 2004 on BBC Radio 4.

The Party Line (radio): The Party Line is a British radio sitcom, co-written by Steve Punt and Hugh Dennis, and produced by Adam Bromley.  It was originally broadcast on BBC Radio 4 between 2005 and 2008.  The show stars James Fleet as Duncan Stonebridge, a Labour Member of Parliament for the imaginary Rothershurst, which appears to be a marginal constituency in the north of England, one which was traditionally Conservative but turned Labour under Tony Blair.  In line with the national trend, the elections of 2005 saw Stonebridge's majority reduced to 27.  Stonebridge is a Londoner and, according to his constituency agent Roger (Geoffrey McGivern), was "parachuted in by RAF Millbank".

Double Income, No Kids Yet: Double Income, No Kids Yet is a British radio sitcom written by David Spicer and originally broadcast on BBC Radio 4 from June 2001 to November 2003.  There were three series of six episodes each starring David Tennant as Daniel and Elizabeth Carling as Lucy, a childless couple in a world of people with children.

Target Books: Target Books was a British publishing imprint, established in 1973 by Universal-Tandem Publishing Co Ltd, a paperback publishing company.  The imprint was established as a children's imprint to complement the adult Tandem imprint, and became well known for their highly successful range of novelisations and other assorted books based on the popular science-fiction television series "Doctor Who".  Their first publications based on the serial were reprints in paperback of three novels which had been previously published as hardbacks, ‘Doctor Who and the Daleks’, ‘Doctor Who and the Crusaders’ by David Whitaker, and ‘Doctor Who and the Zarbi’ by Bill Strutton.  As these sold well further novelisations of the show were commissioned.  In 1975 Universal-Tandem was sold by its American owners, the Universal-Award group, to the British conglomerate Howard and Wyndham.  The company was renamed Tandem Publishing Ltd before being merged with the paperback imprints of Howard and Wyndham's general publishing house W. H. Allen Ltd to become Wyndham Publications Ltd in 1976.  However, during 1977 and 1978 the Wyndham identity was phased out and, until 1991, Target books were published by 'the paperback division of WH Allen & Co.'

Santana Srinivasa Temple: Santana Srinivasa Temple is located in Mugappair West near Anna Nagar in Chennai.  The place was originally known as "Maga-pperu" in Tamil which means "Blessed with a child".  Later the name ‘Magapperu’ got colloquially transformed to Mogappair.  The name is due to Santana Srinivasa Perumal whose vigraham/idol was found beneath the temple premises in Mugappair in Chennai.  Santana Srinivasa blesses childless couple with children.

Supporting paragraphs: Double Income, No Kids Yet David Tennant
Answer: David Tennant