The couple, facing retrial at the Old Bailey, deny manslaughter of their newborn by gross negligence

A wealthy aristocrat and her partner caused the “entirely avoidable” death of their baby daughter through their “reckless” and “grossly negligent” conduct while on the run to evade authorities, a retrial has heard.

Constance Marten, 37, and Mark Gordon, 50, of no fixed abode, deny manslaughter of their newborn by gross negligence and a second charge of causing or allowing the death of a child between 4 January and 27 February 2023.