Introduction
Choosing a digital marketing agency is a high-impact decision — especially for established brands.
With so many agencies in London offering similar services, the difference lies not in what they say they offer, but in how they think, work, and integrate with your business.
If you’re a CMO, marketing lead, or commercial director evaluating agency partners, here are five factors that matter more than portfolios and pitch decks.
1. Start With Business Objectives, Not Just Deliverables
The right agency starts by understanding your commercial goals — not by pushing a list of services.
Whether you’re looking to increase lead volume, improve conversion rates, or reposition your brand, your agency should ask sharp questions and challenge you on what success really looks like.
An agency that jumps straight to solutions without this conversation? Probably not the one.
2. Look for Clear Thinking, Not Just Pretty Slides
A great marketing partner should be able to explain their strategy in one sentence — and back it up with rationale and data.
Ask:
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How do they define performance?
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What’s their approach to campaign structure and testing?
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Do they talk about KPIs or just CTR?
The best agencies are clear, specific, and confident — without being overcomplicated.
3. Ask About Reporting and Attribution
You don’t just need results — you need to understand where they came from.
Ask how they handle:
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Attribution modelling
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Funnel performance tracking
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CRM and GA4 integrations
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Reporting cadence and tooling
If they can’t show ROI, they’re not helping you scale.
4. Evaluate Their Flexibility and Team Setup
Is the agency built for startup sprints or long-term enterprise growth? Do they have specialists in-house or rely on freelancers? Who owns strategy versus execution?
There’s no one right model — but you should know exactly who’s on your team and what you’re getting.
5. Test Their Communication Style Early
You’re not just hiring expertise — you’re building a working relationship.
Ask yourself:
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Are they responsive and proactive?
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Can they push back with insight, not ego?
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Will they adapt to your internal workflow?
A good agency feels like an extension of your team — not an outsourced task manager.
Final Thought
The best digital marketing agencies in London don’t just deliver campaigns — they help you grow strategically.
At Midori Design Studio, we work with brands that want more than surface-level metrics. If you’re looking for a partner who’ll challenge your assumptions, drive performance, and speak the language of your business — we’d love to talk.