Tyndall became party chairman in July 1972, centralising the NF's activities at a new Croydon headquarters. According to Thurlow, under Tyndall the NF attempted to "convert racial populists" angry about immigration "into fascists". In his history of fascism, Roger Eatwell noted that with Tyndall as chair, "the NF tried hard to hide its neo-Nazism from public view, fearing it might damage popular support." Under Tyndall, the party focused on appealing to the white working-class, and in June 1974 launched the NF Trade Unionists Association. Britain's left-wing recognised the potential threat and fought back by publicising the neo-Nazi past of senior NF members, including photographs of Tyndall wearing a Nazi uniform.