Dee ihe na-esote paragraf a - Jackson nwetara ihe nrite mbụ ya, ọlaọcha, na 110 m hurdles, dị afọ iri na itoolu na 1986 Commonwealth Games. N'oge na-adịghị anya, ọ bịara bụrụ onye a ma ama n'ụwa nile, na-enweta ọla nchara n'asọmpi egwuregwu ụwa nke 1987 nakwa ọlaọcha n'egwuregwu Olimpik nke oge okpomọkụ nke 1988. Mgbe o merisịrị ọlaọcha ọzọ n'ọsọ 60 mita na 1989 IAAF World Indoor Championships, o meriri European
na ihe nrite ọlaedo Commonwealth n'afọ 1990. Oge 1993 hụrụ ya ka ọ ruru n'elu egwuregwu ya: mgbe ọlaọcha na 1993 Indoor Worlds, ọ gara n'ihu setịpụrụ ndekọ ụwa nke 12.91 sekọnd iji ghọọ 1993 World Champion. E merighị akara a ruo ihe fọrọ nke nta ka ọ bụrụ afọ iri na atọ, ọ ka bụkwa ihe ndekọ ụwa. Jackson nyekwara ndị otu egwuregwu 4x100 mita nke Britain aka inweta ọla ọcha n'ụwa.