Asa Butterfield was 8 in After Thomas when he played the character 'Andrew'.
That was over 17 years ago in 2006.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 27, and has starred in 25 movies in total, 21 of those since After Thomas was released.
In After Thomas, I think Asa Butterfield looks: