Acting
After returning to Britain from Canada, Lamb became a regular cast member, along with Kate O'Mara, in the BBC's North Sea ferry-based soap Triangle (1981–83), in which he played Matt Taylor, the ship's chief engineer.
Other credits include The New Avengers, The Professionals, Fox, Minder, Lovejoy, Get Back, A Touch of Frost, Our Friends in the North, Taggart, Casualty, Kavanagh QC, Spooks, Midsomer Murders, and The Bill.
Between 2007 and 2010, Lamb appeared in Gavin & Stacey playing Gavin's father, Michael "Mick" Shipman. He returned to the role for a Christmas special in 2019 and again for the show finale in 2024.[5]
In 2008, Lamb began playing Archie Mitchell, the father of Ronnie and Roxy Mitchell in EastEnders. He based his portrayal of Archie on his own father.[6] He left the show in April 2009, but returned in July the same year, around the same time that Danniella Westbrook returned to her role of Archie's niece, Sam Mitchell. Archie was killed off in a murder story line at Christmas, 2009. In 2009, Lamb starred alongside Liam Cunningham in Blood: The Last Vampire, in the role of General McKee. On 19 February 2010, Lamb appeared with his son, George Lamb, in EastEnders Live: The Aftermath, after Stacey Slater was revealed to be Archie's killer in the closing moments of the 25th-anniversary live episode.
In April 2011, BBC Learning launched "Off By Heart Shakespeare", a school-recital contest for secondary school pupils. For the project, Larry took on the role of Jaques from the play As You Like It, and delivered the speech: "All the world's a stage".[7]
It was announced that Lamb would join the cast of New Tricks as Ted Case in series 12.
Lamb's films include Buster and Essex Boys. In 1983, he had a small speaking role in Superman III.
In September 2023, Lamb appeared in the Channel 5 drama series The Inheritance, appearing alongside Samantha Bond, Jemima Rooper, Gaynor Faye, Robert James-Collier and Adil Ray.[8]