List of winners of the 'Goldstone Trophy':

1968: Argyle (Barry Todd & Noelle Knight)

1969: Argyle (Barry Todd & Noelle Knight)

1970: Argyle (Nigel Bedford & Leslie Boardman)

1971: 

1972: 

1973: 

1974: 

1975: 

1976: Weld (Brian Cook & Lorraine Atkinson)

1977: Carlton (Barry Todd & Jenny Pearson)

1978: 

1979: Argyle

1980: Argyle

1981: Weld

1982: Argyle

1983: 

1984: 

1985: 

1986: 

1987: 

1988: Sphynx

1989: Carlton (Tony Hibbs & Gillian Hibbs)

1990: 

1991: Sphynx

1992: Sphynx

1993: 

1994: 

1995: Formby

1996: 

1997: 

1998: Argyle

Still investigating when the last Floodlit Trophy was. But last known recorded winner ended was 1998.