From 1963 to 1966, he worked as a lecturer in economics at Birmingham City University (then the City of Birmingham College of Commerce) whilst studying for a Master of Commerce degree, specialising in Econometrics and Statistics.[citation needed]
In 1967, at the age of 24, Huckfield was elected to parliament for the constituency of Nuneaton in a by-election following the resignation of Frank Cousins, becoming the youngest MP (the "Baby of the House"). He was Under-Secretary of State for Industry from 1976 to 1979, serving under Industry Secretary Eric Varley in the government of James Callaghan. For a time he was a member of Labour's National Executive Committee, holding the Socialist Societies seat. When Labour returned to opposition in 1979, he was opposition spokesperson on industry from 1979 to 1981. He was a founding member of the Socialist Campaign Group in 1982.
After being re-elected in four general elections, Huckfield did not stand when the constituency boundaries were changed for the 1983 general election. The Nuneaton seat was gained by the ConservativeLewis Stevens, who held it until 1992. Huckfield had been expected to contest the recreated Sedgefield seat for the 1983 general election, but instead Labour selected Tony Blair as their candidate, who was elected.[6]
He is now based in Auchterarder, Scotland, where he runs a funding consultancy called Leslie Huckfield Research International. He quit as a Labour member in 2003 and now supports Scottish independence.[7][8]