Mark Strong was 29 in Prime Suspect 3: The Keeper of Souls when he played the character 'Insp. Larry Hall'.
That was over 30 years ago in 1993.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 60, and has starred in 95 movies in total, 87 of those since Prime Suspect 3: The Keeper of Souls was released.
In Prime Suspect 3: The Keeper of Souls, I think Mark Strong looks: