 Charteris akaita mutambo wake wekutanga kuWales vachipesana neSouth Africa muna 2004 mushure mekunge ambomiririra Wales pamatanho eUnder 19 neUnder 21. Akanga ari chimiro chechikwata chenyika cheWales kweanopfuura makore gumi, achifamba nguva dzose. Akatamba mumakwikwi mazhinji eSix Nations, kusanganisira muna 2010 na2015. 