Thoroughbred Breeders Australia has condemned the confronting maltreatment of thoroughbred horses exposed by an ABC television report.

The $2 million Inglis Millennium for two-year-olds heads the revamped Inglis Race Series which will be worth $8 million.

The relocation of the thoroughbred auctioneers William Inglis from Randwick to Warwick Farm is set to begin.