He started playing badminton at aged 5 in Orkney, then moved to England at 7.

[3][4] In 2021, Vendy claimed his first World Tour title at the Orléans Masters, after in the final he and Ben Lane beat Indian pair Krishna Prasad Garaga and Vishnuvardhan Goud Panjala.

[5] Vendy competed at the 2020 Summer Olympics partnered with Lane in the men's doubles, but the duo was eliminated in the group stage.

[6] In 2022, Vendy won the men's doubles bronze medal at the Madrid European Championships with Ben Lane, after in the semi-finals they were defeated by German pair Mark Lamsfuß and Marvin Seidel.

[4] In August, he competed at the Commonwealth Games, and won a silver medal with Lane in the men's doubles.