British aristocrat Constance Marten and her partner Mark Gordon are on trial for the manslaughter of their infant daughter Victoria, who died while they lived off-grid.

The couple also faces charges of perverting the course of justice and child cruelty.

Marten, a mother of five, tearfully insisted she never harmed her children and emphasized her love for them.

They evaded authorities to prevent their newborn Victoria from being taken into care, similar to their four other children.

Victoria's body was discovered in a decomposed state in a Brighton shed, with her death's cause remaining undetermined.

Marten expressed remorse, stating she believes Victoria died on 9 January of the previous year.

The ongoing trial at the Old Bailey has both defendants pleading not guilty to all charges.