Mark Strickson was born in the charming town of Stratford-on-Avon, and spent his formative years in the quaint village of Ilmington. Growing up, he was exposed to the world of music through his father, a professional musician, and began learning to play various instruments as well as singing in the Trinity Church choir. By the time he attended grammar school, Strickson had already developed a strong foundation in music and continued to hone his skills.
After completing his education, Strickson pursued a career in both music and acting by enrolling at RADA, where he studied music and acting. His first foray into the world of acting came when he joined the Mikron Theatre Company, a troupe that traveled the canals of Britain on a narrow boat, performing in various locations across the country. During his two-year tenure with the company, Strickson not only acted but also wrote and composed many of the plays they performed.
Strickson's next endeavor was in television, where he secured roles in the Granada productions "Celebration" and "Strangers". He also appeared in several BBC shows, including "Angels" and "Juliet Bravo", before being offered the role of Turlough in the popular sci-fi series "Doctor Who" in 1982. This opportunity presented him with a difficult decision, as he had also been offered the part of an ambulance driver in "Angels".
After leaving "Doctor Who" in 1983, Strickson went on to play the role of the young Scrooge in a 1985 remake of Charles Dickens' classic "A Christmas Carol". He then made the decision to emigrate to Australia with his wife, actress Julie Brennan, in 1988. During his time in Australia, Strickson took a break from acting to pursue a degree in zoology.
Strickson returned to the UK in 1995 and began working on various wildlife films for television.