Overview: Knockout Week continues, with the eleven remaining contestants facing a baptism of fire as they are split into two groups and tasked with running a professional lunchtime service on their own. In this episode, the first group heads to a London restaurant headed up by award-winning chef Stevie Parle. During a busy service, the five amateurs are responsible for serving up every dish on the menu to paying customers. Who will falter as they cook in a completely unfamiliar and demanding environment?