The Red Lion, Great Windmill Street, Soho.
On 29th November to 8th December the Second Congress of the Communist League was held in the upstairs room of the Red Lion, Great Windmill Street. At this meeting Karl Marx and Frederick Engels were asked to write an action programme for the Communist League. This programme was published in February 1848 in German as 'Manifest der Kommunistischen Partei' or the Communist Manifesto.
Site: The Red Lion (1 memorial)
W1, Great Windmill Street, The Red Lion public house
2013: No longer The Red Lion and the brass plaque has gone, but we'll keep it here for the record.