Blackett, whose family had resided at Wylam, eight miles west of Newcastle, since the 17th century, entered the army early in life. In a ‘perfunctory’ career, he was captain in the 18th Hussars and served under the duke of Wellington in the Peninsular campaigns and at Waterloo. On the return of peace he settled at the family seat of Oakwood, north of Wylam, and inherited the family’s estate with its coal mine in 1829. Although he joined Brooks’s Club, 3 June 1829, he was returned unopposed in the Tory interest for Bere Alston in 1830 and opposed the Grey ministry’s reform bill, 22 Mar. 1831. He did not seek re-election at the ensuing general election, however, and by the autumn of 1832, he claimed to be a sincere supporter of reform.
One of Blackett’s earliest votes was against the ballot, 15 Feb. 1838.
