Seán played Damien in Anoraks Series One, the centre of so much of the season's drama. Séan is perhaps best known to Doctor Who fans as the voice of Narvin in the Doctor Who audio series Gallifrey, produced by Big Finish Productions. Seán has appeared in over 40 audio dramas in the Doctor Who range, including Series 1-8 of Gallifrey, the award winning Doctor Who-Dark Eyes, the mini series I, Davros, Iris Wildthyme, Bernice Summerfield, The Confessions of Dorian Gray as well as adventures with the 4th, 5th, and 8th Doctors. Seán also appeared as The Policeman in David Tennant's debut "The Christmas Invasion" and made a cameo appearance in the Torchwood episode "Sleeper". Seán returned to the world of Torchwood in the audio adventure "Forgotten Lives" and recently returned as Narvin in "Gallifrey - Enemy Lines".
As well as enjoying a successful stage career Seán's television work includes Stella (Sky1), Skins (E4), the aforementioned Doctor Who – The Christmas Invasion, Torchwood (BBC 1), Manhunt (ITV1), the BBC comedy series Tastebuddies, Crimewatch, Casualty, Back Up, Mud (BBC 1), Crimesolver, The Bench, Tiger Bay, (BBC Wales), Sleeping Dogs (BBC Choice) and the Channel 5/Granada film The Great Dome Robbery. His filmwork includes Sister, Darklands, Bad Company, Shine and Do Not Go Mental, a spoof documentary film that was written and co-produced by Seán for the Dylan Thomas Centenary.