Thorburn hasn’t revealed any details about his partner, but a source claims that he is in a relationship with the British actress Sophie Robinson and they reside in north London.

Furthermore, as per a source, he has an artistic background, with his mother being a painter and his father teaching him acting and theater studies. While growing up in the chic and elite university town of Cambridge, where he attended a college, but later transferred to the Drama Center in London when he was 18.

Furthermore, the actor is the only one among his four siblings who got into acting as his brothers study documentary film and design, and his sister works as a journalist. However, Dominic seems to have maintained a private account on Instagram under the handle @dominicthorburn and has shared 152 posts with only 453 followers.