Paul Anderson was 26 in Doctor Who - L'Invasion de Noël when he played the character 'Jason'.
That was over 18 years ago in 2005.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 46, and has starred in 22 movies in total, 19 of those since Doctor Who - L'Invasion de Noël was released.
In Doctor Who - L'Invasion de Noël, I think Paul Anderson looks: