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The Marxist Bulletin, which commented on SLL-WRP (the Socialist Labour League had become the Workers Revolutionary Party) politics and activities and gave a voice to the ideas of the OCRFI, was successfully infiltrated into the SLL, angering Healy who accused the group of writing substantial sections of documents circulated internally by SLL trade union leader Alan Thornett, who had formed an opposition grouping within the SLL and was soon to leave and form the Workers Socialist League.
The group was formed by Alan Thornett and other members of the Workers Revolutionary Party (WRP) after their expulsion from that group in 1974.
After the Workers' Revolutionary Party left the ICFI in 1985, WRP secretary Cliff Slaughter also repudiated the investigation.