Herbert Bryan was Honorary Secretary of the Watford Branch of the Independent Labour Party (ILP) 1905-1909, of the City of London Branch 1909-1912, of the North London Federation 1910-1912 and of the No 6 London and Southern Counties Divisional Council 1912. From 1908 to 1920, Bryan was a clerk at ILP headquarters. He died in 1950 and at the time of his death lived at 46 Bedford Row, WC1.
From the guide to the Independent Labour Party: Herbert Bryan papers, 1904-1922, (British Library of Political and Economic Science)