Born in Sherborne, Dorset, on 23 April 1945, he was the son of Henry Martyn Cundy and his wife Kathleen Ethel Hemmings.
[2] Cundy made his general ordination exam in Tyndale Hall, Trinity College, Bristol in 1969.
[3] Cundy was made a deacon at Michaelmas 1969 (28 September), by Trevor Huddleston, Bishop of Stepney, at All Saints Church, Benhilton,[4] and ordained a priest the Michaelmas following (27 September 1970), by Mervyn Stockwood, Bishop of Southwark, at Southwark Cathedral;[5] he served first as assistant curate of Christ Church, New Malden until 1973 and subsequently lecturer and chaplain of Oak Hill Theological College in Southgate, London until 1977.
[6] Thereafter Cundy became warden of Cranmer Hall, Durham until 1992,[6] when he was appointed area Bishop of Lewes in the Diocese of Chichester.
[10] In November 2007, it was announced that Cundy was undergoing treatment for pleural mesothelioma, a rare form of lung cancer.