O'Hare started his acting career in 2002, appearing as Sean Weir in the ''
Ultimate Force
''Ultimate Force'' is a British television Action movie, action drama television series, series that was shown on ITV (TV network), ITV, which deals with the activities of Red Troop of the SAS (Special Air Service). The first episode was broad ...
The Royal
''The Royal'' is a British period medical drama, produced by Yorkshire Television (later part of ITV Studios), and broadcast on ITV from 2003 until its cancellation in 2011. The series is set in the 1960s and focuses on the lives of the st ...
''. He appeared in the 2008 French-British horror film '' The Broken''. In 2009, he was cast as Rory Wallace in the comedy drama series '' Taking the Flak''. In 2012, O'Hare had a recurring role in the miniseries '' Hatfields & McCoys'' portraying Ellison Hatfield. In 2013, he appeared in the third season of the Western period drama '' Hell on Wheels'', playing Declan Toole. From 2016 to 2017, O'Hare voiced
John Constantine
John Constantine (), also known as Hellblazer, is an antihero who appears in American comic books published by DC Comics. He was created by Alan Moore, Steve Bissette, and John Totleben, and first appeared in ''Swamp Thing'' #37 (June 1985). I ...
in the superhero animated series ''
Justice League Action
''Justice League Action'' is an American superhero animated television series based on the DC Comics superhero team Justice League. The series is produced by Jim Krieg, Butch Lukic, and Alan Burnett. The show debuted on Cartoon Network UK on N ...
''.
In 2017, O'Hare appeared as George Hall in the historical war family drama film ''
Zoo
A zoo (short for zoological garden; also called an animal park or menagerie) is a facility where animals are kept within enclosures for public exhibition and often bred for conservation purposes.
The term ''zoological garden'' refers to zoology, ...
Chas Chandler
Bryan James "Chas" Chandler (18 December 1938 – 17 July 1996) was an English musician, record producer and manager, best known as the original bassist in The Animals, for which he was inducted into the Rock and Roll Hall of Fame in 1994. H ...
Shared Experience
Shared Experience is a British theatre company. Its current joint
< ...
2002)
* ''Small Change'' (
Crucible Theatre
The Crucible Theatre, or simply The Crucible, is a theatre in Sheffield, South Yorkshire, England, which opened in 1971. Its name refers to crucible steel, which was developed in Sheffield in 1740 and drove the industrialisation of the city.
...
, Sheffield 2002)
* ''
Ghosts
In folklore, a ghost is the soul or Spirit (supernatural entity), spirit of a dead Human, person or non-human animal that is believed by some people to be able to appear to the living. In ghostlore, descriptions of ghosts vary widely, from a ...
Criterion Theatre
The Criterion Theatre is a West End theatre at Piccadilly Circus in the City of Westminster, and is a Grade II* listed building. It has a seating capacity of 588.
Building the theatre
In 1870, the caterers Spiers and Pond began developmen ...
, London 2005)
* ''A Whistle in the Dark'' (
Manchester Royal Exchange
The Royal Exchange is a grade II listed building in Manchester, England. It is located in the city centre on land bounded by St Ann's Square, Exchange Street, Market Street, Cross Street and Old Bank Street. The complex includes the Royal Exc ...
&
Tricycle Theatre
The Kiln Theatre (formerly the Tricycle Theatre) is a theatre located in Kilburn, in the London Borough of Brent, England. Since 1980, the theatre has presented a wide range of plays reflecting the cultural diversity of the area, as well as n ...
, London 2006)
* ''Salt Meets Wound'' ( Theatre503, London 2007)
* ''
The Revenger's Tragedy
''The Revenger's Tragedy'' is an English-language Jacobean revenge tragedy which was performed in 1606, and published in 1607 by George Eld. It was long attributed to Cyril Tourneur, but "The consensus candidate for authorship of ''The Reve ...
'' (Manchester Royal Exchange, 2008)
* ''The Grapes of Wrath'' (
Chichester Festival Theatre
Chichester Festival Theatre is a theatre and Grade II* listed building situated in Oaklands Park in the city of Chichester, West Sussex, England. Designed by Philip Powell and Hidalgo Moya, it was opened by its founder Leslie Evershed-Mart ...
&
English Touring Theatre
English Touring Theatre (ETT) is a major touring theatre company based in London, England.
History
English Touring Theatre was founded in 1993 by Stephen Unwin. In 2008, the directorship of the company was taken over by Rachel Tackley, making E ...