Andrew was a European junior finalist but took a circuitous route to becoming an Olympian; walking away from a US college scholarship and then struggling with injuries until he blossomed again under coach Feidhlim Kelly.

On his Olympic debut in Tokyo 2020 he outdid his ranking by making the semi-finals of the ultra-competitive 1,500m. Since then he has gone from strength to strength, setting Irish records – indoor (3:33.49) and outdoors (3:20.42) in 2023, making the semi-finals of two World Championships. He finished 13th in the 1500m final of the recent Europeans in June. In 2024, he set an Irish indoor 5000m record (13:12:56). Andrew has a degree in education from DCU.