Question: Which British television production company has produced television series for the world's oldest national broadcasting organisation?

Context articles: RTÉ Radio
Kudos (production company)
AJK TV (UK)
Carnival Films
BBC
Matt Carroll (producer)
Shavick Entertainment
Clearwater Features
Desilu Productions
Maspero television building

RTÉ Radio is a division of the Irish national broadcasting organisation Raidió Teilifís Éireann.
 RTÉ Radio broadcasts four analogue channels and five digital channels nationwide.
Kudos Film and Television is a British film and television production company.
 It has produced television series for the BBC, ITV and Channel 4, and its productions include "Spooks" (US:"MI5"), "Hustle", "Life on Mars" and its spin-off "Ashes to Ashes", "The Amazing Mrs Pritchard" and "M.I. High".
 In 2007 it was voted Best Independent Production Company by "Broadcast" magazine.
 Formed in 1992, since 2007 it has been part of the Shine Group.
 In 2007 it also set up the film unit, Kudos Pictures.
 In 2011, the Shine Group was 100% acquired by News Corporation (now 21st Century Fox), and in 2015, it was included in a 50%/50% joint venture between 21st Century Fox and Apollo Global Management's Endemol and CORE Media Group, as Endemol Shine Group.
AJK TV is a British television production company, based in Marple, Greater Manchester.
 Their main emphasis is in motorsport and has produced programs for the Motors TV channel.
 They have produced television programs and DVDs for the following UK based motorsport series:
Carnival Films is a British television production company based in London, UK, founded in 1978.
 It has produced television series for all the major UK networks including the BBC, ITV, Channel 4, and Sky, as well as international broadcasters including PBS, A&E, HBO and NBC.
 Productions include single dramas, long-running television dramas, feature films, and stage productions.
The British Broadcasting Corporation (BBC) is a British public service broadcaster with its headquarters at Broadcasting House in London.
 The BBC is the world's oldest national broadcasting organisation and the largest broadcaster in the world by number of employees.
 It employs over 20,950 staff in total, 16,672 of whom are in public sector broadcasting.
 The total number of staff is 35,402 when part-time, flexible, and fixed contract staff are included.
Matthew Carroll (born 6 June 1944) is an Australian film and TV producer.
 He is best known for producing films since the early 1970s including "Breaker Morant", "Storm Boy" and "Sunday Too Far Away".
 Later, he went into television production, producing the television series "G.P." for the Australian Broadcasting Corporation (ABC).
 He was a principal in the production house Roadshow, Coote and Carroll which produced television shows for Australian and international audiences.
Shavick Entertainment is a Canadian film and television production company, owned and operated in Vancouver, British Columbia by James Shavick and his wife, former British Columbia politician Joy MacPhail.
 The company has primarily produced television films, most notably the Donald Strachey mystery series starring Chad Allen, as well as a few theatrical films and a number of television series, including "The New Addams Family", "Los Luchadores", "Young Blades" and "Breaker High".
Clearwater Features, Ltd. was a British film production company (based first in Battersea and then at Shepperton Studios) that produced the first two series of the children's television series Thomas the Tank Engine and Friends from 1984 to 1986, for The Britt Allcroft Company.
 Clearwater is also known for creating the hit children's TV show TUGS.
 The company was founded in the early 1980s by Gerry Anderson alumni Ken Turner and David Mitton, and produced television commercials as well as miniature effects for films and TV shows.
 Turner left the company in 1979, to be replaced by American-born director and producer Robert D. Cardona.
Desilu Productions ( ) was an American production company founded and co-owned by husband and wife Desi Arnaz and Lucille Ball, best known for shows such as "I Love Lucy", "", and "The Untouchables".
 Until 1962, Desilu was the second-largest independent television production company in the U.S. behind MCA's Revue Productions until MCA bought Universal Pictures, and Desilu became and remained the number-one independent production company until being sold in 1967.
 Ball and Arnaz jointly owned the majority stake in Desilu from its inception until 1962, when Ball bought out Arnaz and ran the company by herself for several years.
 Ball had succeeded in making Desilu profitable again by 1967, when she sold her shares of Desilu to Gulf+Western for $17 million ($ in 2016 dollars).
 Gulf+Western then transformed Desilu into the television production arm of Paramount Pictures, rebranding the company as the original Paramount Television.
Maspero (Arabic: ماسبيرو‎ ‎   ] ) is the name of the huge building on the bank of the Nile river in Cairo, Egypt.
 It is the headquarters of the Egyptian Radio and Television Union (formerly the Arab Radio and Television Union, the oldest state-run broadcasting organisation in the Arab World, and Africa.
 Maspero is also the name of the street, which this building overlooks.