He served as Treasurer of the Household under Benjamin Disraeli between 1874 and 1875 and was Chairman of the National Union of Conservative and Constitutional Associations from 1879 to 1883.

[1] In 1874 he was sworn of the Privy Council[2] and appointed Treasurer of the Household under Benjamin Disraeli,[3] a post he held until 1875.

[citation needed] The Northumberland North seat was abolished in 1885 and Percy was not elected for another constituency.

[1] Two years later he was summoned to the House of Lords through a writ of acceleration in his father's barony of Lovaine.

[6] Percy succeeded in the dukedom in 1899 upon his father's death and was made a Knight of the Garter the same year.