The case for independent media oversight

Ron Sneddon

12 Feb 2026 · 4 min read

Why a growing number of NZ advertisers are adding an independent layer to their agency relationships — and what that looks like in practice.

Most NZ advertisers have one source of media advice: their agency.

This isn't a problem if the agency relationship is working perfectly — if the buying is efficient, the strategy is genuinely tailored to your business, and the account is serviced at the level you were sold. But when it's not working perfectly, you often have no independent way to know.

What independent oversight looks like

For some clients, independent oversight means a full audit — a line-by-line review of spend, buying terms, audience delivery, and channel mix. That process typically finds something worth finding.

For others, it's a lighter-touch arrangement: a senior independent voice available monthly to review agency proposals, sanity-check recommendations, and flag anything that needs more scrutiny. Not replacing the agency — adding a layer of accountability to it.

For a growing number of clients, it starts with Superscan.

Why now?

Two things have changed in the last few years that make independent oversight more accessible than it used to be.

First, AI has collapsed the time required for analysis. Things that used to take days of manual media planning work can now be done in minutes. That makes independent review economically viable for advertisers who would previously have been told the cost wasn't worth it.

Second, the network agency model is under more scrutiny than it used to be. The disclosure conversation — about rebates, about tech margins, about trading desk arrangements — is happening more openly. Advertisers are asking harder questions.

The conflict isn't the agency — it's the structure

I want to be clear about something: most people working in network agencies are good at their jobs and genuinely trying to do the right thing by their clients.

The problem is structural. When your media buying, your audience data, your creative, and your technology are all provided by subsidiaries of the same holding company, the incentive to recommend the right answer and the incentive to recommend the house answer are the same incentive.

Independent oversight doesn't fix that structure. But it adds a check on it.