DC/DS/DI Raymond Milton "Ray" Carling is a fictional character in BBC One's science fiction/police procedural drama, "Life on Mars" and its spin-off "Ashes to Ashes".
WPC/DC Annie Cartwright is a fictional character in BBC One's science fiction/police procedural drama, "Life on Mars".
 The character is portrayed by Liz White.
 In the American version the character's surname is changed to 'Norris' and she is portrayed by Gretchen Mol.
DI Alexandra "Alex" Drake is a fictional character in BBC One's science fiction/police procedural drama, "Ashes to Ashes".
 The character is portrayed by Keeley Hawes and as a child by Lucy Cole.
Life on Mars is a British television series broadcast on BBC One between 9 January 2006 and 10 April 2007.
 The series combines elements of speculative fiction and police procedural, featuring an officer from the Greater Manchester Police (played by John Simm) who wakes up in the 1970s after being involved in a road accident.
 The title is a reference to David Bowie's 1973 single "Life on Mars?
, with its lyrics of 'Take a look at the law man, beating up the wrong guy'."
DCI/DI Sam Tyler is a fictional character in BBC One's science fiction/police procedural drama, "Life on Mars".
DCI Gene Hunt is a fictional character in BBC One's science fiction/police procedural drama "Life on Mars" and its sequel, "Ashes to Ashes".
 The character is portrayed by Philip Glenister in both "Life on Mars" and "Ashes to Ashes", whereas in the American version he is portrayed by Harvey Keitel.
 His younger self, also known as the ghost of Gene Hunt, is portrayed by Mason Kayne.
Detective Chief Inspector James Keats is a fictional character in BBC One's science fiction/police procedural drama, "Ashes to Ashes".
 The character is portrayed by actor Daniel Mays.
WPC/DC Sharon "Shaz" Granger is a fictional character in BBC One's science fiction/police procedural drama, "Ashes to Ashes".
 The character is portrayed by Montserrat Lombard.
 The character's look and style are based on Joanne Catherall of The Human League in 1981.
PC/DC Christopher "Chris" Skelton is a fictional character in BBC One's science fiction/police procedural drama, "Life on Mars" and its spin-off "Ashes to Ashes".
The Chinese Detective is a British television police procedural drama series, first transmitted by the BBC between 1981 and 1982.
 The series was created by Ian Kennedy Martin, who had previously devised "The Sweeney" and "Juliet Bravo".
 The series starred British Chinese actor David Yip as Detective Sergeant John Ho, the first Chinese lead actor in a British television drama series.
 The series offered traditional police procedural storylines in a setting of occasional prejudice and distrust within the police force, and the prejudice displayed by those Ho encounters whilst doing his job.
 Like many other television detectives of the time, Ho was something of a maverick, often using unorthodox methods to solve crimes.
 The series was set in and around London's docklands, before redevelopment began in the 1980s.

Question: Chris Skelton is a fictional character in the science fiction/police procedural drama broadcast between 9 January 2006 and 10 April 2007 on what channel?
Answer: BBC One