March is the adopted daughter of the Duke and Duchess of Richmond, placed as a baby of five months.
She has traced her birth parents. Her birth father is a Lesotho Mosotho musician, and they have a happy continuing relationship; but her birth mother, daughter of a wealthy English family, has rejected her overtures to meet.
She has appeared in Common as Muck, the Lenny Henry Show and The Farmer's Bride. She is a convert to Soka Gakkai Buddhism and works as a volunteer in their English centre at Taplow, Buckinghamshire.