He fought in the
Second World War between 1941 and 1942, with the
King's Royal Rifle Corps (60th Rifles), and was invalided. He held the office of
High Sheriff of Nottinghamshire for 1966–67. He was a Justice of the Peace for Nottinghamshire for over 30 years. He had been the longest-serving member on the Council of the
Magistrates' Association and between 1975 and 1978 he served as chairman of the association's Juvenile Courts Committee. He also held the office of Deputy Lieutenant of Nottinghamshire. He was a great supporter, benefactor and President of Thrumpton Village Cricket club from 1949. He was also a member of
Nottinghamshire County Cricket Club and
Marylebone Cricket Club, but the village club enjoyed much of his time amidst a wide variety of public duties. When the Thrumpton club lost its ground on Church Lane at the end of 1967, he offered the use of his park and since 1968 the ground has been one of the most picturesque in the County.
Thrumpton Hall He spent much of his life working for the preservation of
Thrumpton Hall, his home in
Thrumpton,
Nottinghamshire. He had moved here when he was one, in 1924. His diplomat father had been posted to
La Paz in
Bolivia and George's mother went too. Her brother-in-law was the 10th Lord Byron. Although he moved back to his family when they returned to London 18 months later, he spent his holidays here. At the age of 13, he was writing school essays about life as a squire – or a squarson. After his uncle's death in 1949, with heavy death-duties Seymour was compelled to buy the house he had expected to inherit and, in a country auction, as many of its contents as he could afford. He borrowed £50,000, (equivalent to £ as of ) and by selling the majority of the estate, paid it back within the year. ==Personal life==