Bowns made his first appearance for the British senior team in 2012, and has played as the country's starter ever since. In 2019, Britain made the IIHF Men's World Championship for the first time in 25 years, where Bowns was named player of the match after making 59 saves in a 6-3 loss to the USA. He finished the tournament as the goalie with the most saves. Bowns again represented Great Britain at the 2021 IIHF World Championship, finishing with a save percentage of 91%.