Trained under head coach Laurel Bailey at Warrender Baths Club in Edinburgh.
Took part in the 2011 European Junior Swimming Championships in Belgrade, Serbia, winning a silver medal for the 200m individual medley and a bronze for the 400m individual medley.
Swam for the University of Florida Gators under an athletic scholarship, where he was NCAA national runner-up in the 500-yard freestyle event in both 2014 and 2015.
Received 12 All-American honors during his four seasons of college swimming.
Competed for Scotland at the 2014 Commonwealth Games held in Glasgow; winning the gold medal in the men's 400m individual medley, and silver medals in both the 200m individual medley and the 4x200m freestyle relay.
Won a gold medal as a member of the British team in the men's 4x200m freestyle relay, at the 2015 World Championships in Kazan, Russia.
Won a silver medal as part of the men's 4x200m freestyle relay at the 2016 Olympics in Rio.
Tanya Wallace — Mother
Derek Wallace — Father
University of Florida, Gainesville, Florida, United States