Copywriting Agency: What Clients Want and Rarely Get

Ask senior marketers what they most want from an agency’s thinking and 77% will tell you it’s “challenging our brief and assumptions.” Ask how many actually get it, and the answer is 43%. That’s from a July 2026 IPA and Tracksuit report built on a survey of 200 senior brand-side decision-makers who select and manage agencies, plus twenty in-depth interviews.

It’s a telling number for anyone choosing a copywriting agency, because it says the problem isn’t whether agencies matter. Nine in ten of those clients say agencies are central to their commercial success or contribute meaningfully to it. The problem is what they’re buying, and what turns up.

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The challenge gap in the copywriting agency relationship

The same IPA research found a similar shortfall on “stretch and growth thinking”: 83% rate it extremely or very valuable, while only 48% say they receive it. Among C-suite, EVP and VP respondents the challenge gap is widest, at 48 percentage points: 85% value it, 37% feel they get it.

My reading is that this matters more for copywriting than for most disciplines. A copywriter is the person who turns a brief into the words a customer actually meets. A brilliant writer who executes a weak brief flawlessly has still delivered a weak result, only more expensively. The writer worth paying for is the one who reads the brief and says: “I think you’re asking for the wrong thing.”

Look at the seniority split. The people with the most authority over a brief are the least likely to feel challenged on it. My interpretation, and it is only that, is that the more senior the client, the fewer people around them are willing to say no. A good agency treats that as part of the job rather than a threat to the relationship, and a good brief-and-recommend process should screen for exactly that quality in the writer it puts forward.

What award-winning copywriting agencies and clients do differently

An Aprais and WARC study, reported in March 2023, matched WARC’s Effective 100 database against client–agency evaluations. It found that 68% of agencies that won effectiveness awards were scored above average by their clients, and 67% of the winning clients were scored above average by their agency partners. Trust was the highest-scoring behaviour on both sides. The largest gap between average relationships and award winners was challenge.

A D&AD and System1 release looking at six award-winning campaigns reaches the same place from the other direction. Creative failures, it argues, are rarely about a shortage of talent or ideas; they usually come from a working relationship that can’t support bold thinking. Brands, in other words, get the creativity their relationships allow, not just the creativity they request.

Put those together and you get a sequence I find hard to argue with: trust makes challenge safe, and challenge is what separates the good work from the effective work. Trust also takes time. The ANA and 4As reported in April 2025 that average client–agency tenure has roughly doubled since 2016, from 3.2 years to about seven. Clients with no mandatory agency reviews averaged 8.1 years; those with frequent reviews were as low as 3.8.

The creativity bar is slipping

Andrew Tindall of System1 wrote in The Drum in May 2024 that creatively awarded advertising is now only as effective as the average ad. Using System1’s star ratings and WARC’s effectiveness database, he reports that campaigns rated one to three stars, which he says now make up most recent awarded work, return well under half the ROI of four- and five-star campaigns.

Meanwhile, the System1 and Effie book The Creative Dividend, covered by B&T in January 2026, analysed 1,265 campaigns from 2007 to 2023. It found creativity and media planned together account for 60.1% of campaign business results on average, yet 41% of marketers say creativity is still seen as a risk.

I’d say risk-aversion and the missing challenge are the same problem. An agency that tells you what you already believe is the safe choice, and the data suggests it’s rarely the profitable one.

How to choose a copywriting agency for brands

If the research is right, the most revealing question isn’t “show me your portfolio.” It’s “what would you push back on in our brief?” Listen for specifics. Then ask who exactly would write it, because the challenge only helps if it comes from someone senior enough to be heard and good enough to be right.

This is why I think the agency model, done properly, is curation rather than inventory. A database can show you a hundred writers. It can’t tell you which one will say your brief is wrong, and say it well. At Copywriter Collective that’s the job: you brief us, and we recommend the right senior copywriter from a personally vetted roster, matched to the brief, not a database to browse.

None of this means a copywriting agency should be difficult for its own sake. The research describes challenge sitting alongside trust, not replacing it. The aim is a writer who earns the standing to disagree, and a client who is glad they did.

Great copy starts before the first draft. It starts with someone willing to question what they’ve been asked to write.