 His performances were noticed back in England and he was eventually offered a transfer to the club who originally rejected him, Newcastle United in 1920 for a fee of £2,500.It did not take long for Seymour to become a crowd favourite at St. James' Park, his performances helped Newcastle reach the FA Cup Final with goals against Portsmouth, Derby County, Liverpool, and Manchester City before eventually going on to win the FA Cup in 1924 in a 2–0 win over Aston Villa, in which he scored a thunderous 20-yard half volley to secure the win.He was also part of the Newcastle team that were crowned Division One champions in 1926–27.