Keiran Flynn appeared on Coronation Street in three roles:
- Photographer Ben Cunningham, appearing between January and February 1994
- Freshco Regional Manager Aiden O'Donnell, appearing intermittently between October 1998 and April 1999
- PC Paul Harker, appearing intermittently between July 2017 and July 2019.
His other credits include roles in In Suspicious Circumstances, All Quiet on the Preston Front, The Bill, Wing and a Prayer, Casualty, Dream Team, Doctors, Wire in the Blood, Rose and Maloney, Vincent, Jekyll, Downton Abbey and The Sandman, along with the 2005 film Pierrepoint.
On stage, he appeared in productions of Blue Remembered Hills, Tales from the Vienna Woods, His Girl Friday, Major Barbara and The White Guard for the National Theatre.
