The Guardian has disclosed for the first time in its accounts that it makes “cash payments” and gives “free advertising space” in rebates to agencies in return for certain levels of spend.

Media owners rarely discuss rebates, despite the fact they are an open secret in much of the industry. Guardian Media Group is only the second UK publisher to do so, after Daily Mail owner DMGT admitted to the practice for the first time in its accounts last December. The disclosures suggest rebates have been growing in scale.

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