Charlie Heaton was 20 in The Schoolboy when he played the character 'Michael Stevens'.
That was over 9 years ago in 2015.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 30, and has starred in 9 movies in total, 8 of those since The Schoolboy was released.
In The Schoolboy, I think Charlie Heaton looks: