Mackney was born in April 1971 in Emsworth, Hampshire, educated at De La Salle College in Jersey, St Boniface's College in Plymouth, and studied law at the University of Birmingham.
Mackney was born in April 1971 in Emsworth, Hampshire. Mackney was educated at De La Salle College in Jersey. Mackney was studied law at the University of Birmingham. St Boniface's College in Plymouth was Jersey.