Natascha McElhone was 23 in A Breed of Heroes when she played the character 'Janet'.
That was over 30 years ago in 1994.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 54, and has starred in 28 movies in total, 27 of those since A Breed of Heroes was released.
In A Breed of Heroes, I think Natascha McElhone looks: