Arthur Gwynne Jones, Baron Chalfont, OBE, MC, PC (5 December 1919 – 10 January 2020) was a British Army officer, politician and historian.

[5] On 1 January 1943, he received an emergency commission in the Royal Armoured Corps as a war-substantive lieutenant, with the same rank in the South Wales Borderers from 1 April.

[6][7] After the war, Gwynne Jones remained in the Army, receiving a substantive lieutenant's commission in the South Wales Borderers on 24 August 1946 (with seniority from 5 June 1942), and was promoted to captain on 5 December.

[12]Gwynne Jones was brevetted to lieutenant-colonel on 1 July 1960,[13] and was decorated as an Officer of the Order of the British Empire (OBE) in the 1961 Birthday Honours.

On 27 March 1967, in the House of Lords, Chalfont became the spokesman for Harold Wilson's Labour Party Government's attempt to divest Britain of the Falkland Islands.

In October 1974, just after Labour won a second general election that year, he stated in an interview with the BBC journalist Robin Day: "I had hoped for a realignment of the politics of the radical left in this country and I believed when I left the Labour Party that a great success by the Liberal Party in this election could have helped that forward.