 Kuwedzera kune mazita ake mashanu eBritish, Lewis ndiye mukwikwidzi weBritish keirin mushure mekubudirira kudzivirira zita rake musi wa 26012018. Akabudirira mukukunda mibairo yakasiyana-siyana yepasi rose, yakaguma nemenduru shanu dzenyika yenyika uye dzakawanda dzeEurope uye dzepasi rose. Oliva akamiririrawo Wales paCommonwealth Games kuDelhi 2010, Glasgow, 2014 uye Gold Coast 2018. Akatora menduru yesirivheri mu keirin mumitambo ya2018, mushure mekufambira mberi kubva padanho rekutanga kuburikidza nekudzokorora. Makwikwi ake ekupedzisira World Championship achimiririra Great Britain yaive 2017 Worlds, kwaakakwikwidza mu keirin, mutambo wake waanofarira uku achienzanisa hurongwa hwekudzidzira nesimba pamwe chete nezvidzidzo zvake zvinotsvaga paCardiff Medical School. 