Bayliss was a member of the
England under-20 side that completed the grand slam during the
2017 Six Nations Under 20s Championship and later that year came off the bench as England lost to
New Zealand in the final of the
2017 World Rugby Under 20 Championship to finish runners up. Bayliss was called up to the Scotland squad for the
2021 Six Nations Championship, qualifying through his Aberdonian grandmother. Bayliss made his international debut on 7 November 2021 for Scotland against
Australia in an Autumn International, when he came on as a substitute. He made his first international start against
Japan on 20 November 2021. He played for
Scotland 'A' on 6 February 2026 in their match against Italy XV. == Career statistics ==