He served as an Army officer, initially as a cornet with the 23rd Light Dragoons from 1808.

[1][2][3] He took over the Clare Regiment of Local Militia as Lieutenant Colonel Commandant in January 1813.

[5] Graham was appointed a Deputy Lieutenant for North Riding of Yorkshire in 1812.

[6] Graham had several sporting interests, most notably as a first-class cricketer who played for Middlesex.

His equine activities extended to racehorses for a period, and he owned the 1816 winner of the St Leger Stakes, The Duchess.