The main actors and actresses in the movie are:
* Anne Hathaway as Emma Morley
* Jim Sturgess as Dexter Mayhew
The film also features a supporting cast including:
* Patricia Clarkson as Emma's mother, Wendy
* Romola Garai as Sylvie, Dexter's girlfriend
* Ken Stott as Emma's father, Ian
* Rafe Spall as Ian
* Tom Mison as Ian
If you are referring to a different movie with the title "One Day the Morning", please let me know, and I'll try to provide information on its cast.