Devereux was educated at Stowe School and at the University of East Anglia where he graduated in 1998 with a BA degree in History of Art and Architecture.
In 2017 Lord Hereford was appointed Director of Private Clients for Bonhams.
On 12 June 2010, Hereford married Louisa Knight, a textile designer, younger daughter of William Knight and his wife Sylvia Caroline van Lennep, of Holland Park, London.
They have two children: On 6th May 2023 Lord Hereford attended the coronation of Charles III and Camilla at Westminster Abbey in his capacity as Premier Viscount of England.
This biography of a viscount or viscountess in the Peerage of England is a stub.