Ralph Ineson was 23 in O Mary This London when he played the character 'Policeman'.
That was over 30 years ago in 1994.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 54, and has starred in 55 movies in total, 49 of those since O Mary This London was released.
In O Mary This London, I think Ralph Ineson looks: