Initially acting part-time with the Cork Shakespearean Company and at the Cork Opera House, by 1947 Lynch is acting full-time.
Lynch is a founding member of the Radio Éireann Players and appears in productions of Teresa Deevy plays among others. During the 1950s he is responsible for a Radio Éireann show Living with Lynch, broadcast on Sunday nights, the first comedy series on Radio Éireann. Between 1967–81, he acts onstage with the Abbey Theatre.
In 1962, and again in 1977, Lynch wins a Jacob’s Award for his acting on RTÉ television.
By 1979, Lynch is back in Ireland, and makes his first appearances as Dinny Byrne in the RTÉ soap Bracken. Later the Byrne character would feature in the long-running RTÉ soap Glenroe.
Lynch quits Glenroe after he claims to have been “shamefully treated” and offered “small potatoes” when he asked for a pay rise. He is also upset that he is not to get a pension. RTÉ disputes those claims. He criticised RTÉ for preventing him from doing other acting work alongside Glenroe. “I was terrible restricted in RTÉ, they wouldn’t let me off for anything, even commercials.”
Lynch voices the main antagonist, Grundel the Toad, in the Don Bluth film Thumbelina, his final audio work before his death seven years later.
Lynch dies suddenly on August 1, 2001, in Alicante, Spain, where he had been living since leaving Glenroe.
Norton is educated at Synge Street CBS. From an early age he wants to be an actor, and regularly attends performances at the Abbey Theatre. His mother, Frances, plays the violin and his father, Eugene, is a baritone singer and works as a bakery manager. He has one sibling, the late acting teacher Betty Ann Norton.
Norton has been acting for over forty years in theatre, television, and film, and frequently plays clergymen, most notably Bishop Brennan in the sitcom Father Ted, as well as roles in The Sweeney (1975), Peak Practice (1993), Sunset Heights (1997), A Love Divided (1999), Rebus: Black and Blue (2000), Mad About Mambo (2000), Boxed (2003) and Jimmy’s Hall (2014). He stars as Finian McLonergan in the critically acclaimed New York City Center‘s 2009 production of Finian’s Rainbow, and in October 2009 reprises the role in the Broadway revival at the St. James Theatre. His co-stars are Cheyenne Jackson (Woody) and Kate Baldwin (Sharon).
As well as Bishop Brennan in Father Ted, Norton also plays Albert Einstein in two episodes of Star Trek: The Next Generation (namely “The Nth Degree” and “Descent“); the librarian Lieutenant James Porteous in the highly acclaimed 1970s British television drama series Colditz; Phil Harrister, a criminal involved in an intricate bank robbery, in The Sweeney episode “Contact Breaker”; O’Brady in the Minder episode “National Pelmet“; and Rory, a roguish but genteel Irishman who is diagnosed with cirrhosis of the liver, in The Royal episode “Beggars and Choosers.”
Norton makee his film debut with a small role in the 1965 thriller The Face of Fu Manchu starring Christopher Lee, and later appears in the 1969 epic film Alfred the Great as Thanet. He plays the part of Pongo in the screen version of Spike Milligan‘s war-time memoir Adolf Hitler: My Part in his Downfall. In 1971 he plays Chris Cawsey (aka “The Rat Man”), one of several villains in the controversial Sam Peckinpah film Straw Dogs starring Dustin Hoffman. His character has a deviously infectious, deliberately irritating laugh that helps build tension throughout the film.
In 2011 Norton appears as the character Old Mr. Black in the film Extremely Loud & Incredibly Close directed by Stephen Daldry. He appears in the 2011 film Water for Elephants, in which he portrays a circus worker called “Camel” who befriends a character played by Robert Pattinson. In 2012 he appears as the character Tommy in the short film Homemade written by Matthew Roche and directed by Luke McManus. He is in the Ken Loach film Jimmy’s Hall which is released in 2014. He plays the role of Mr. Heelshire in the 2016 film The Boy. In 2018 he plays the role of Mr. Binnacle in Mary Poppins Returns.
Norton has a longtime partnership with playwright Conor McPherson, having originated roles in six of his plays in Dublin, London and New York, and for which he has won both the Tony and Olivier Award. Norton plays Jack in The Weir (1997), Joe in Port Authority (2001), Matthew in Come On Over (2001), Richard in The Seafarer (2006–7), Reverend Berkeley in The Veil (2011), and Maurice in The Night Alive (2013).