Tonight, the Karim family from west London go up against the Dawes from Hampshire. Will the Karims, with their simple Indian recipes, curry favour with Rosemary and Giorgio, or will the Dawes and their ambitious flavour combinations earn them a place in the semi-finals? Aunt Zakila is queen of the kitchen in the Karims' household but will her spice mix leave the judges wanting more when they visit the family at home? Ellie Dawes and her scientist boyfriend Sam share a passion for food but will their bold use of ingredients be a step too far for the judges?