The BBC must stop box-ticking casting that 'shoe-horns' ethnic minority actors into period dramas, a review has urged. In a damning independent report into the corporation's content, the BBC was also told it needs to improve coverage of the working class and women over 60 if it is to keep engaging audiences. The broadcaster has been conducting 'preachy' diversity casting in a string of its dramas, resulting in ethnic minorities ending up in inappropriate settings, the review found.