Oonagh graduated from ArtsEd in 2021.

Theatre includes: Cinderella in Cinderella (Cliff’s Pavillion); Liesel's Mother and Others in The Book Thief – in Concert (Prince of Wales); Lowen in The Curious Case of Benjamin Button (Ambassadors Theatre); Onstage Swing/Eleanor/1st Cover Blanche Barrow in Bonnie & Clyde (UK Tour); Nurse/Ensemble in The Book Thief (Leicester Curve); Lowen in The Curious Case of Benjamin Button (Southwark Playhouse); Cinderella in Cinderella (Newcastle Theatre Royal); Rusty/2nd Cover Ariel in Footloose (UK & International Tour); Cinderella in Cinderella (Richmond Theatre) and Hortensia in Matilda the Musical (West End) directed by Matthew Warchus.

Television includes: Dancer in The Holiday.

Workshops include: Ride, The Curious Case of Benjamin Button and Sorel Bliss/Jackie in Hay Fever the Musical

Credits whilst training include: Sarah’s Friend in Ragtime directed by Stephen Whitson; Ensemble in The Wedding Singer directed by Jonathan O’Boyle; Jenny in Company directed by Josh Seymour.