He takes on the role after Mike Golding of Huntington Antiques stepped down following 27 years in the role.
Golding will remain a member of the board. Dixon is a longstanding member of the board and has served as finance director since 2007.
Lord Rupert de Mauley, chairman of LAPADA, said: “The whole board thanks Mike for his many years of service. He has been a trusted source of advice and support to several of my predecessors and me. While we are sad that he has decided to step down, we are all pleased that John will succeed him; he will be a valuable asset as LAPADA navigates changing times.”
Noah Forbes, a history graduate who previously worked in politics in Westminster, has recently joined as LAPADA’s membership officer.