Sophie McShera (born in 1985; Bradford, England) is the actress who plays Daisy Mason on Downton Abbey. She appeared in the TV series "Waterloo Road" as character Ros McCain.
She starred in Disney's remake of Cinderella, alongside Downton co-star Lily James, who plays Rose Aldridge, in the title role. She will portrayed one of the evil stepsisters.
Sophie McShera's Wikipedia entry