The remaining contestants take part in the first semi-final, travelling to the National Breeding Centre at Leamington Spa's Guide Dogs For The Blind to face their toughest challenge so far. Cooking in tents and faced with unfamiliar equipment, the celebrities are split into two teams and challenged to cook up a feast to celebrate Guide Dogs For The Blind's 90th anniversary for 120 staff, volunteers and those whose lives have been changed by the organisation. Back in the MasterChef kitchen, the competitors are tasked with recreating their favourite takeaway dishes in the Invention Test