Carter studied at the London Academy of Music and Dramatic Art. His West End theatre credits include Someone Like You with Petula Clark, A Man for All Seasons with Martin Shaw, Cat on a Hot Tin Roof with Brendan Fraser and Ned Beatty, We Will Rock You, I Love You, You're Perfect, Now Change, Les Misérables, The Phantom of the Opera, A Midsummer Night's Dream, The Taming of the Shrew, Always at the Victoria Palace with Shani Wallis and Side by Side by Sondheim. He was nominated for a Laurence Olivier Award for his performance as the Prince/Wolf in Into the Woods.