BBC News : British actress Olivia Colman defied the odds to scoop an Oscar on a night when Green Book also sprang a surprise by winning the award for best film. Colman won best actress for her role in The Favourite and charmed viewers with a funny and tearful speech. Green Book won three trophies in total, including best picture, which had been expected to go to Netflix's Roma. Bohemian Rhapsody won the most awards in total with four, while Roma and Black Panth...