When former Labour Party leader Neil Kinnock saw the young David-Lloyd performing at Monmouth Castle, he sent him £250 to use towards his acting career.

David-Lloyd went on to train at the National Youth Theatre, before moving to Reading to pursue his acting career with The Rep College.

Since 2015, he has reprised the role of Ianto Jones in several Torchwood audio plays for Big Finish Productions and has also written some of the scripts for those releases.

[9] He also appeared in the pantomime Cinderella at the Charter Theatre Preston playing the character of Prince Charming.

[citation needed] David-Lloyd also appeared in Casimir Effect, an independent short feature, starring as Dr Robert Cameron.

[11] In June 2011, Gareth appeared as a main character in the Syfy movie Red Faction: Origins based on the video games.

On 30 October 2012, David-Lloyd began appearing on Holby City as Rhys Hopkins, a role he played until January 2013.