Deiniol grew up in South Wales where his love of performing first took seed. He began singing at an early age and was classically trained by world renowned vocal coach Helen May. In 2005 Deiniol joined the National Youth Theatre before moving to London in 2007 to train at the Italia Conti Academy.
Theatre credits include; Jigger (Carousel) Cardiff; Superintendent (Overcoat Opera) Space, Edinburgh and UK Tour; Leon Czolgolsz (Assassin’s) Chelsea Theatre, London; London Olympics 2012 Closing Ceremony; Charlie (Santa’s Journey) Epsom Playhouse, London.
Since 2018 Deiniol has been Assistant Director for David Michael Productions working on productions such as The Best of Wham!, Frankie’s Guys, Boybands The Ultimate Party Show and Queenz! Deiniol also currently works alongside David Michael Productions and Blackburn International as Assistant Director for their onboard productions on luxury cruise-line Viking Ocean Cruises.