By 1917 the UDC had more than a hundred local branches across Britain and Ireland, and 10,000 individual members; it also had affiliations from organisations which represented 650,000 more. It became increasingly influential in the Labour Party, to which its members increasingly graduated due to the continued support for the war from the Liberals. The UDC criticised the Versailles Treaty as being unjust to Germany, and also advocated the withdrawal of Allied troops from Russia. A. J. P. Taylor said the UDC was "the most formidable Radical body ever to influence British foreign policy".