Porcher was of Huguenot stock. His family had reached England by way of the Carolinas. The junior branch specialized in the Indian trade, and Henry and his brothers, Thomas, George and Charles, were born in Madras, where their father was employed in the East India Company’s civil service. Thomas served with the Company before joining the family’s East India agency, and with Charles (later of Clyffe, Dorset) and George (afterwards rector of Maiden Erleigh, Berkshire) intended for the law and the church, it was Henry who joined the family firm in London following Thomas’s death in 1812, becoming a partner on his father’s retirement in 1816. Edward Fletcher and James Alexander* joined them that year and they subsequently traded as Fletcher, Alexander and Company of Devonshire Square.
He is not known to have spoken in debate. He voted with the Liverpool ministry against parliamentary reform, 20 Feb., 1 June 1823. He divided against Catholic relief, 1 Mar., 10 May 1825, and was correctly described in a radical publication that session as a Member who ‘attended occasionally, and voted with ministers’.
The previous year he had become a director of the Bank, a position he held until 1843, when he also retired as one of the capital’s deputy lieutenants. Fletcher, Alexander and Company traded until at least 1861, but it remains unclear how long Porcher, who in 1843 took a 21-year lease on Park House, Heckfield (part of the duke of Wellington’s estate on the Berkshire-Hampshire border) remained a partner. He died near Heckfield in November 1857, following a fall from his horse. By his will, dated 17 May 1835 and proved 28 Jan. 1858, he left all his property to his wife.
