Pratt was born on 13 December 1797 in London, and died there on 9 January 1870. He was the second son of John Pratt from Kennington, Surrey. Pratt became a student at the Inner Temple on 2 April 1819 and was called to the bar on 26 November 1824. He then joined the home circuit. He went on to become a commissioner of the peace for Middlesex, Westminster, Kent, Surrey, Sussex and the Cinque ports. From 1828 until his death he was the consulting barrister to the commissioners for the reduction of the national debt. His wife, Anne, died on 25 November 1875.
From The Biographical Dictionary of British Economists in Oxford Reference.