On 1st of May 2000, Jack got married to Michelle Gomez. Michelle Gomez is also an actress and she is popular for her role in the TV series, Green Wing, The Book Group and many more. As a married couple, they have also been parents once.
When Jack was just seven, he was enrolled at independent Dragon School. Then he joined Cheltenham College. He also attended British American Drama Academy for several years. Initially he was not interested in acting; however, at the age of 18 he appeared in a summer drama course. That time he made an impression to the director Clwyd Theatr Cymru and he offered him to play for him. He finally made his acting debut in 1996 and that was from the TV series, This Life. Next year he starred the role of Robert Bradley in the TV series, The Moth and also made his feature film debut that year by appearing in the movie, Fierce Creatures. His net worth is said to be around $3 million.