Donnelly has appeared in many different roles around Ireland and has also directed and written shows. His first theatre role was in 2005 where he featured in the chorus of
The Wireman at the
Gaiety Theatre, Dublin. He then continued to play Rod in ''
Singin' in the Rain and Ethan in The Full Monty, both at the Olympia Theatre, Tony in West Side Story at the Solstice Theatre, Aladdin in Aladdin and Collins in Michael Collins: A Musical Drama
, both at the Cork Opera House, Prince Charming in Cinderella at the Gaiety Theatre, Dublin and Chorus in Sweeney Todd: The Demon Barber of Fleet Street'' at the
Gate Theatre. In 2008, he joined the West End production of
Les Misérables as a swing and, as a member of the cast, was part of the
Les Misérables concert with the
Bournemouth Symphony Orchestra on the
Isle of Wight. He became second cover
Javert and
Enjolras in the following season of 2009/10, during which time he also performed the lead role of
Jean Valjean as an emergency cover multiple times. With the following cast change he was promoted to principal
Enjolras and was officially listed (and performed) as third cover Valjean. He eventually finished in
Les Misérables on 18 June 2011. Donnelly's next role was Raoul in
Andrew Lloyd Webber's
The Phantom of the Opera at
Her Majesty's Theatre. During this time, he also featured in commercials for
McDonald's and
Jameson Whiskey, and appeared on such television shows as
The Tudors,
The Open House,
The Late Late Show and
Showbands. He later performed in
You Should Be Dancing at the
National Concert Hall. On 3 October 2010, Donnelly played the role of Courfeyrac in the 25th Anniversary Concert of
Les Misérables at
The O2 Arena in London. He also played the role of Combeferre in the
film of the show, released in 2012. On 12 November 2012, Donnelly took over the role of Tony in
Billy Elliot The Musical at the
Victoria Palace Theatre. On 20 August 2013, it was confirmed that Donnelly would originate the role of Deco in the
West End Musical
The Commitments from 21 September. The following year Donnelly began playing the role of Huey in
Memphis from 9 October 2014 for which he was nominated as Best Actor in a Musical in the 2015 Olivier Awards On 23 April 2015, it was announced that Donnelly would play Charlie in the West End production of the musical
Kinky Boots, at the
Adelphi Theatre. The first preview was on 21 August 2015. On 29 February 2016 Donnelly was nominated as Best Actor in a Musical at the 2016 Olivier Awards. He left the show on 13 August 2016 and moved back to Ireland to play Jackie Day in
Donegal, a new play by
Frank McGuinness. On 6 December 2016, he made his Broadway debut, reprising the role of Charlie Price in
Kinky Boots. On 12 June 2017, Donnelly returned to the West End production of
Les Misérables to play the lead role, Jean Valjean, subsequently reprising the role in the 2018 tour in the United Kingdom and Ireland. On 29 February 2020, he returned to
The Phantom of the Opera, this time playing The Phantom on the 2020 UK Tour. Due to the
2020 COVID-19 pandemic, the tour was closed just a few weeks into its run at
Curve, Leicester, ending Donnelly's run as the Phantom on tour. On 4 December 2020, it was announced that Donnelly would reprise the role of The Phantom in the West End production of
The Phantom of the Opera when it was scheduled to reopen in June 2021. After two and a half years in the role, Donnelly performed his last show as
The Phantom on 3 February 2023. On 31 October 2023, Donnelly re-joined
Les Misérables in the new West End production at the
Sondheim Theatre reprising his role of Valjean for 15 weeks. In 2024, he reprised the role again in
Les Misérables: The Arena Spectacular World Tour. He shared the role with
Alfie Boe and
Peter Joback. Donnelly performed the role in the UK, Australia, Italy, the United Arab Emirates, Denmark, Norway, Switzerland, and Luxembourg. ==Filmography & Television==