1975 – Kevin & Flora Holcroft (founding members)
1980 – Noela Taylor
1987 – Arthur Hodgkinson
1989 – Marion Higman
1990 – Peter Leather
1991 – Jim Deem
1995 – Linda Kleinschmidt
2003 – Tony Neller
2005 – Rod Kleinschmidt
2006 – Kerri Elliott
2011 – Jenny Peardon