Broadhead was descended from a Hanoverian court page named Brinckman. His father changed his name in accordance with the will of a brewer uncle, Henry Broadhead (d.1754), thereby acquiring property at Monk Bretton, Yorkshire and elsewhere, and in 1791 applied to Pitt for a baronetcy, after previous attempts through the mediation of Lords Grantley and Abercorn. The latter was informed, the same year, that Broadhead was ready to offer £3,000 for a seat in Parliament and to support government, though he feared that his son might become a convert to opposition. Renewing his application in 1794, he referred to his support of Pitt’s administration, to the ‘very superior abilities’ of his heir and to his two other sons in the King’s service. In 1806 it would appear that the Prince of Wales was prepared to urge Broadhead’s claims for a baronetcy, for Lord Moira assured the Prince that he had urged Lord Grenville to procure him one, but left his name off a list he handed to Grenville.
Broadhead purchased a seat in Parliament from his Clifford Street neighbour, John Calcraft, in 1812. Calcraft had been urged to return Whigs, but there seems to have been no political stipulation. Broadhead was not on the Treasury list after the election. He voted with the minorities against the vice-chancellor bill, 11 Feb. 1813, and against the joint paymaster-general’s salary, 8 Mar. On 29 Mar. he was in the majority in favour of the sinecure regulation bill. He supported Catholic relief steadily in 1813 and, despite his grumbling later that year that the Catholics were spoiling their own cause,
From 1815 Broadhead voted silently with government. His voting with them on 1 Mar. 1815 on the treatment of the Spanish Liberals was denied in the Morning Chronicle, but there was no doubt of his having done so when present thereafter until the end of the session of 1816. He was inactive for the rest of the Parliament, possibly disillusioned. He did not seek re-election in 1818. In 1820 he came in for another close borough, but died soon afterwards, 12 Dec. 1820. His son of the same name replaced him and obtained the coveted baronetcy in 1831.
