Adam was born on September 9th, 1972. He received a rigorous education at the Guildhall School of Music and Drama, graduating in 1996. Early in his career, he worked extensively in television and theatre, earning a Best Newcomer nomination at the M.E.N awards for his work at the Royal Exchange.
His breakthrough role came in 2001 with the critically acclaimed series "Band of Brothers". This was followed by a string of notable guest leads in popular shows such as "Extras", "Ashes to Ashes", "Hustle", "Dr. Who", and "Foyles War".
In 2010, Adam performed in New York in the play "The Pride" alongside Ben Whishaw and Andrea Riseborough, earning him the Lucille Lortel Award for Best Actor in a Featured Role and a Drama Desk Nomination.
He returned to the stage in 2013 with the critically acclaimed and Olivier Award-winning play "Bull", and then again in 2016 with the Olivier and Critics Circle award-winning play "King Charles III", in which he played the Prime Minister and received the Clarence Derwent Award for Best Supporting Actor.
In 2015, Adam married former actress Victoria Shalet, and they had their first child in September 2016. He also has an adult daughter from a previous relationship.
Adam continued his collaboration with Mike Bartlett, appearing in the TV series "Dr.Foster" and the TV film version of "King Charles III" for BBC2. He then returned to the stage, performing in the Olivier Award-winning "Girl From The North Country" at the Noel Coward Theatre and the critically acclaimed "Consent" at the National Theatre.
More recently, Adam reunited with Rupert Goold for the world premiere of Anne Washburn's new play "Shipwreck" at the Almeida Theatre. His most recent television work includes Julian Fellowes' new period drama "Belgravia" for ITV and Epix, and the critically acclaimed series "I May Destroy You" for the BBC and HBO.
Adam is currently in production for a new 6-part thriller "Vigil" made by World Productions for BBC, and will soon film a new comedy pilot for Sky, produced by Avalon, called "Safe Space", written and starring Greg Davies, directed by Richard Laxton.