He is known for television roles including: Dominic Montgomery in Mistresses, Dr. Steve Shaw in Hawthorne, Aidan Marsh in Hunted, Bassam "Barry" Al-Fayeed in Tyrant, and Tal-Rho in Superman & Lois.
He has also appeared on stage in The Rivals (Bristol Old Vic, 2004), Romeo and Juliet (Royal Shakespeare Theatre, 2006), and Much Ado About Nothing (Novello, 2006).
Gail' in the 2010 Christmas Special 'The Perfect Christmas' episode of the BBC sitcom Miranda alongside regulars Sally Phillips, Miranda Hart, Tom Ellis, Sarah Hadland and Patricia Hodge, and his character returned in the fourth episode of the third series, titled "Je Regret Nothing".
[3] In November 2012, it was announced that Rayner was cast as Simon Templar in a pilot for a new television series of The Saint, based on the character.
[6] In August 2022, it was announced that Rayner was cast in a new, main role for the third season of Max television series Warrior.