Grant also played two games for Scotland A in the IRB Nations Cup success in Bucharest in June 2009. His debut was as a replacement in the win against Russia, and his first start followed four days later in the victory against Uruguay. That same month he signed a professional contract with Edinburgh, and his Scotland A career continued with a replacement appearance in the 38–7 win against Tonga at Netherdale, Galashiels, in November 2009. Grant was subsequently nominated for Young Player of the Season in the Celtic League for season 2009–10. Grant trained with the senior Scotland squad during the 2010 Six Nations Championship.