Mezue ahịrịokwu na-esonụ: Harmsworth bụ onye nrite na
1987 European Athletics Indoor Championships, nke atọ na mita 400, wee mechaa nke ise na 1987 IAAF World Indoor Championships, ebe ọ bụ nọmba otu European. Na mba, ọ bụ onye mmeri Britain n'ime ụlọ n'otu afọ ahụ. Ọ bụ onye mmeri ndị ntorobịa Britain n'afọ 1980. O setịpụkwara ihe ndekọ ụlọ nke Britain na Commonwealth na 4 × 400 m na 1987, na n'èzí na 4 × 200 m na 1988.