Hirst's acting roles include Mike Barnes from Hollyoaks, Martin Gooch from The Ghost Squad and Steve Kingsley from Holby City. He has narrated TV documentaries such as Blueprint for Disaster, 2005, The Garage, Smash Lab, and How It's Made since 2001. He also narrates some of the programme trailers on Fox and Channel 4. Hirst appeared as a fireman called Paul on Coronation Street during the show's 50th anniversary in December 2010. Paul returned to Coronation Street as a regular character during October 2011. It was revealed on 24 February 2013 that Hirst would be leaving Coronation Street in 2013 at the end of his contract. In 2014, Tony Hirst narrated two seasons of Food Factory and in 2015 narrated season 1 of Home Factory both on Discovery science.