 Bush is currently chairman of the Wiltshire Historic Buildings Trust, Patron of the Community Foundation for Wiltshire, and Swindon and Chairman of Fredericks Wiltshire.His other interests in Wiltshire have included chairing the Bobby Van Trust.He is a Trustee of the Devizes Assize Courts Trust


On 30 December 1961, Bush married Pamela Eve Irene Bagwell, the daughter of Lieutenant-Commander William Bagwell RN of Clonmel, County Tipperary and of Evelyn Irene Hamilton Wills, the only child of Sir Frederick Wills, 1st Baronet.