Robert John Bush is Kate Bush's father. He worked hard to win a scholarship to the Grammar School at Grays, and later won a place at medical school to become a doctor.

He married Hannah Bush in early 1943. Together they had three children: John Carder Bush (1944), Paddy Bush (1952), and Kate Bush (1958).

His voice can be heard in Kate Bush's songs The Fog, in the extended version of The Big Sky (The Meteorological Mix), and also among the voices calling to the heroine of The Ninth Wave between the songs Under Ice and Waking The Witch.