Alun Parry, from Liverpool, is definitely worth looking up. Formerly awarded the prize of "Busker of the year" by the Liverpool Echo newspaper, he does a lot of gigging for Trade Union events and other rallies. He also used to run the Woody Guthrie folk club at the Ship and Mitre in Liverpool (currently on haitus). He's a skilled songwriter, and although because I find a lot of the political narratives he weaves into his songs to be gross oversimplifications, I do admire the fact that he keeps the memories going of important figures and events in the history of the labour movement, and I also admire his capacity to draw together a political crowd through folk music.

His website is http://parrysongs.co.uk/ - some of his songs are more inspired by traditional folk than others, but I'd particularly flag up his songs "If Harry Don't Go", about the London dockworker and union activist Harry Constable, "The Limerick Soviet", about a self-declared Soviet in the City of Limerick in April 1919 during the Irish war of independence, and the music-hall inspired song "Oh Mr Cameron" (actually mostly by Alun's mum Norma Parry), which has been picked up by the Liverpool Socialist singers and others as a protest song.