Lambton is a younger daughter of Antony Lambton (formerly 6th Earl of Durham) and his wife Bindy née Blew-Jones. Her older sister is Lucinda Lambton, the British writer, photographer and broadcaster.
Lambton is the younger child of Antony Lambton, the former 6th Earl of Durham, and his wife Bindy Blew-Jones. She has an older sister, Lucinda Lambton, who is a renowned British author, photographer, and television presenter.