An aristocrat and her partner accused of the manslaughter of their baby have denied all the charges they face. Constance Marten and Mark Gordon pleaded not guilty to five counts relating to their daughter, Victoria, during a hearing at the Old Bailey on Thursday. Gordon said “not guilty” in a clear, loud voice when answering the charges on the indictment, while Marten also pleaded not guilty. They are charged with the manslaughter by gross negligence of the girl, referred to in the charges as Baby A, between 4 January and 27 February. They also face charges of perverting the course of justice by concealing the body, concealing the birth of a child, child cruelty and allowing the death of a child. Marten, 36, and Gordon, 49, of no fixed address, appeared before the judge Mark Lucraft KC, who at one point asked the defendants to stop talking to each other while the hearing was in progress. A trial has been set for 2 January, with a further pre-trial hearing listed for 8 December. Police found remains at an allotment in the Hollingbury area of Brighton in March after a major search.