The contestants take part in the first of the semi-finals and face their toughest challenge yet as they cook for 90 staff and volunteers at the Black Country Living Museum in Dudley, West Midlands. In specially constructed marquee kitchens, the celebrities are split into two teams and must create dishes from ingredients including pork belly, beef rump, mackerel and whole haddock. Then it's back to the MasterChef Kitchen to face an Invention Test, after which more will be going home.