He was born in Ashington, Northumberland, England, was a chorister at Durham Cathedral, attended Uppingham School, and then was a choral scholar at King's College, Cambridge.
In 2005, he won the Rosenblatt Recital Prize at the BBC Cardiff Singer of the World competition .
He had an international concert career and worked with some of the world's principal orchestras with conductors such as John Eliot Gardiner, Kazushi Ono, Sir Colin Davis, Gianandrea Noseda, Esa Pekka Salonen, Sir Mark Elder, Sir Roger Norrington, Andris Nelsons and Daniele Gatti.
He is married to Anna Kennedy, a psychotherapist specialising in counselling children and adolescents based in Rutland.
[citation needed] In February 2022 Andrew and Anna Kennedy founded the Rutland Ladies’ Choir, a community choir launched to support the mental health of local women.