The Daily Mail and Evening Standard publisher is the second national press group to begin using AdFast, after the Financial Times took it on last summer.
AdFast general manager Rob Fogwill said he was "hopeful" that other national newspaper groups would follow Associated's lead.
"It has always been our hope that AdFast will become a portal through which files can be sent to all UK newspaper titles, and this is a major step forward toward this goal," he said.
Story by Josh Brooks
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"This is a repeat of what happened to 1066 Capital t/a Crystal a year ago. They also never put this company in administration.
We are all still left unable to claim the redundancy and notice pay owed..."
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