Roache was honoured at the 2010 Guinness World Records ceremony for the achievement, when he surpassed actor Don Hastings from the American soap opera As the World Turns, who previously held this title.
Roache stated in 2010 that he has no plans to leave the role and will remain in Coronation Street for as long as they will have him.
Ken was introduced as the educated son of a working-class family.
Portrayed as moralistic and a political activist, Ken differed from the other, predominantly working-class characters in the soap opera.
20 million people tuned in to watch Ken's discovery of the affair.
The storyline lead to a feud between Ken and Mike, prominent in both characters' narratives until Mike's screen death in 2006.
The character developed a reputation as a ladies' man; plots saw Ken dating numerous women, marrying four times to three women (Valerie Tatlock in 1962, Janet Reid in 1972, Deirdre Hunt in 1981 and again in 2005), fathering four children with three different women (Lawrence Cunningham in 1961 from Ken's affair with Susan Cunningham but he never knew about Lawrence until 2010, Twins in 1965 with Susan Barlow and Peter Barlow from Ken's marriage to Valerie Tatlock, and in 1995 Daniel Osbourne from Ken's affair with Denise Osbourne), and adopting Deirdre's daughter (Tracy Barlow).
He finds a poster for the demo in the front room and throws it on the fire.Ken takes refuge in the pub on the corner, the Rovers Return Inn, where he gives Dennis Tanner a packet of cigarettes when landlady Annie Walker refuses him credit for them.Ken goes to No.1 and chats to pensioner Albert Tatlock.This is an allegation denied by Roache, who has cited Ken's evolution over the years, his chaotic love life and dysfunctional family as evidence to the contrary.Roache has been honoured with a lifetime achievement award at the British Soap Awards for his portrayal of Ken.