Rubuta ci gaba don wannan sakin layi - Swift ya wakilci Ingila daga U16 har zuwa U21 matakin. Ya fara buga wasan sa na kasa da kasa a wasan da suka doke Wales U16 a ranar 15 ga Oktoba 2010. Ya kasance wani ɓangare na tawagar U17 wanda ya lashe gasar cin kofin FA ta Duniya ta 2011 da kuma gasar Algarve ta 2012, amma bai iya taimaka wa ƙungiyar ta cancanci shiga gasar cin kofin Turai ta U17 ta 2012 ba. Swift ya yi wasanni 9 a lokacin da U19s suka kasa cancanta don gasar zakarun Turai ta U19 ta 2013 da 2014. Da yake hawa zuwa matakin U20 don kakar 2014-15, Swift ya kasance wani ɓangare na tawagar da ta lashe gasar 2014 Four Nation Tournament kuma a ƙarshe ya zira kwallaye na farko na kasa da kasa tare da mai budewa a nasarar 2-1 a kan United States U20 a ranar 29 ga Maris 2015. An kira Swift a cikin 'yan wasan U20 don gasar Toulon ta 2015 kuma ya bayyana a duk wasannin Ingila yayin da Matasan Lions suka gama na huɗu. A watan Nuwambar 2015, Swift ya fara buga wasan farko na U21 tare da farawa a cikin 3<unk>1 2017 European U21 Championship cancantar nasara a kan Switzerland. A ranar 25 ga Agusta 2016 an kira shi zuwa kungiyar U21 ta Gareth Southgate don fuskantar Norway a UEFA U21 Euro 2017
mai cancanta.