Younger left college at the age of 17 on his father's death to run the family brewery of George Younger and Son, the business founded by his great-grandfather, George Younger (baptised 17 February 1722), of Alloa, Clackmannanshire.

Younger was a Deputy Lieutenant of Clackmannanshire from November 1901,[1] and Unionist Party member of parliament for Ayr Burghs from 1906 until 1922.

He was created a baronet on 12 July 1911, and later Viscount Younger of Leckie on 20 February 1923.

One of his great-grandsons was the Conservative politician George Younger, 4th Viscount Younger of Leckie (1931–2003), who held ministerial office as Secretary of State for Scotland from 1979 to 1986, and Secretary of State for Defence from 1986 to 1989.

His son, Charles, was a first-class cricketer who was killed in the First World War.