[6] In 1937, the speedway rider Dicky Case took over the sixty acre estate of Rye House and introduced a training school operating under the name of the Hackney Motor Club.During 1974, six independent tracks (unaffiliated to a governing body) took advantage of the new National Greyhound Racing Club (NGRC) rule allowing smaller venues to join them in what was called the permit scheme.[16] Gin And Jass trained by Dave Drinkwater claimed the Crayford Vase and broke four track records in addition to winning the Pall Mall Stakes in 1976.Salina and Regal Girl (both George Lang) won two consecutive 'Key' competition victories before Dutch Jet became Peterborough Derby champion in 1983 for Jean Talmage.[18] In 1995, Theo Mentzis won the St Leger with Kens Dilemma and one year later Night Trooper finished runner up in the English Greyhound Derby.[17] John 'Ginger' McGee had an attachment at the track in 1998 following his return from a 1994 NGRC ban and in 1999 the Sovereign Stakes was revived under new Racing Manager David Quinn.