Douglas Henshall was born in Glasgow, Scotland in November 1965. His mother was a nurse and his father a salesman. He is the youngest of three children and has two older sisters. He grew up in Barrhead and attended Barrhead High School. Whilst at school a friend asked him to join The Scottish Youth Theatre based in Glasgow. After leaving school, he moved to London to train at Mountview Theatre School. He returned to Glasgow after training where he joined the 7:84 theater company. Eventually, he went back to live in London where he received critical acclaim for his theater work, notably "Life of Stuff" at the Donmar Warehouse (1993) and "American Buffalo" at the Young Vic (1997). One of his first successful film roles was as Edgar in