Acting Delaney began his acting career in theatre; he starred in
Colin Teevan's
The Kingdom at the
Soho Theatre in 2012. In 2015, Delaney joined the cast of the
RTÉ One soap opera
Fair City as Shane Cawley, a role he would play until 2019. He made his feature film debut in the 2019
Hellboy reboot. In 2022, he began playing in the
Acorn TV detective series
Harry Wild.
History Upon completing his PhD, Delaney became an Honorary Fellow at his alma mater the
University of Exeter. In October 2023,
History Hit launched the podcast
After Dark, which Delaney co-hosts with English historian
Madeleine Pelling. Delaney and Pelling were jointly nominated for Best New Presenter at the 2024
Audio and Radio Industry Awards (ARIAs), while
After Dark won Rookie of the Year at the 2024 True Crime Awards and was shortlisted for the Listeners' Choice Award at the 2025
British Podcast Awards. Announced in 2023,
Doubleday acquired the rights to publish Delaney's debut book
Queer Georgians in 2025. It also had a North America release under the title
Queer Enlightenments via
Grove Atlantic. The book is based on Delaney's PhD. ==Personal life==