I Am Ruth, posed on the red carpet together ahead of the ceremony: Kate, in a one-shoulder black dress and Mia, in a two-tone halterneck jumpsuit.The 22-year-old rising talent looked the spitting image of —she channelled the pared-back style she has made her signature on the red carpet throughout her career and they both sported similar hairstyles. and her daughter, Mia Threapleton.Kate scooped the leading actress trophy for her rousing performance in I Am Ruth, which explores mental health crises among teenagers in relation to social media, while the Dominic Savage-directed film won the "single drama" category.