Matt Smith was 23 in The Ruby in the Smoke when he played the character 'Jim Taylor'.
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 41, and has starred in 36 movies in total, 34 of those since The Ruby in the Smoke was released.
In The Ruby in the Smoke, I think Matt Smith looks: