Plot: Double-Michelin-starred chef Michel Roux Jnr and MasterChef dining expert Gregg Wallace ask two of their skilful semi -finalists to step up to service at London's two star L'Atelier de Joel Robuchon, famous for its French cuisine with Spanish and Japanese influences. Working under head chef Olivier Limousin, they must now compete in the heat of service and reach the exacting standards of two Michelin star cuisine