[1] Nash attended Lanesborough School in Guildford and Winchester College,[2] where he was Vice-Captain of the Boat Club.

Nash won the bronze medal in the coxless pair along with Will Satch of Leander Club at the 2012 Summer Olympics.

[4] In 2014, Nash was moved into Great Britain's flagship boat, the Men's Coxless four along with Alex Gregory, Andrew Triggs Hodge and Moe Sbihi.

[5] In the men's eight, Nash came second at the 2015 European Championships and was part of the British team that topped the medal table at the 2015 World Rowing Championships at Lac d'Aiguebelette in France, where he won a gold medal as part of the eight with Matt Gotrel, Constantine Louloudis, Pete Reed, Paul Bennett, Moe Sbihi, Alex Gregory, Will Satch and Phelan Hill.

[6][7][8] With the men's four, himself, Gregory, Sbihi and Louloudis, Nash won the 2016 European Championship and the gold medal at the 2016 Olympics.