Waller was educated at
Whitgift School,
South Croydon, London. He completed his higher education at
Durham University. Waller played club hockey in the
Men's England Hockey League Premier Division for
Wimbledon and then
Durham University. While at Durham he made his senior international debuts in October 2018, for
Great Britain v
Belgium on 2 October 2018 and for
England v
France on 16 October 2018. On 27 April 2021 it was announced that Waller had signed for Belgian club
Gantoise for the 2021–22 season. Later that year he was selected to represent Great Britain in the delayed
2020 Olympic Games in Tokyo. He won a bronze medal with
England in the
Men's tournament at the
2022 Commonwealth Games in Birmingham. After one season in Belgium he returned to Wimbledon for the
2022-2023 season. He won a silver medal with England at the
2023 Men's EuroHockey Championship in Mönchengladbach. In 2024 he moved to the Netherlands to play for
Pinoké. He was selected to represent
Great Britain at the
2024 Summer Olympics. The team went out in the quarter-finals after losing a penalty shootout to
India. == References ==