sentence: records most successful horse : no horse has won this race more than once leading jockey ( 2 wins ) : william buick - beachfire ( 2011 ) , gatewood ( 2012 ) leading trainer ( 2 wins ) : sir michael stoute -- imperial stride ( 2005 ) , perfect stride ( 2009 ) john gosden - beachfire ( 2011 ) , gatewood ( 2012 ) winners weights given in stone and pound .