Rubuta ci gaba ga wannan sakin layi - Harrison ya fita daga tawagar Team GB don gasar zakarun duniya ta 2012
da kuma wasannin Olympics na 2012 bayan da 'yan wasan da suka fi kwarewa suka dawo cikin tawagar. Ya lashe taken 'yan kasa da shekaru 23 a Gasar Gasar Gasar Lokaci ta Burtaniya. 2013 ya ga Harrison ya koma tawagar Burtaniya don Gasar Cin Kofin Duniya, inda ya kasance wani ɓangare na ƙungiyar Team Pursuit da ta lashe lambar azurfa. Harrison ya sanya hannu a kan tawagar don kakar 2014.