How to Choose a Digital Agency | Tann Westlake
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Advice & guides24 September 2026
Agency selection · Partnership / 20268 min read

How to choose a digital agency.

The right agency is not simply the one with the most impressive pitch. It is the team most capable of understanding the challenge, making good decisions and delivering the work with you.

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Tann Westlake colleagues reviewing creative work together
Clear answers. Better decisions.

Start by defining the problem.

Before making a shortlist, write down what needs to change and why. “We need a new website” is a proposed solution. The underlying problem may be weak positioning, an outdated brand, poor conversion, difficult editing or a change in the organisation.

Agencies respond more intelligently when the brief describes desired outcomes, priority audiences, known constraints, available budget and decision process.

1. Look for relevant evidence.

Relevant does not always mean an identical client. Look for comparable complexity, audiences, commercial challenges and delivery requirements. Ask what the agency actually contributed and what changed as a result.

  • Can they explain the problem behind the work?
  • Is the strategic thinking visible, not only the final design?
  • Can they discuss results honestly, including limitations?
  • Did the team deliver the work they are presenting?

2. Understand who will do the work.

Pitch teams and delivery teams are not always the same. Ask who will lead strategy, design, development and account management, and how senior people remain involved after appointment.

A larger agency may offer breadth and capacity. A smaller independent agency may offer greater continuity and direct senior attention. Neither is automatically better; the question is what your project needs.

3. Test the quality of their questions.

A capable agency should be interested in the audience, problem and evidence before prescribing features or creative directions. Their early questions reveal how they think and whether they are prepared to challenge assumptions constructively.

Good agencies do not simply take the brief. They help make the brief better.

4. Examine the process.

DiscoveryHow will they understand audiences, stakeholders, data and requirements?
DecisionsWhat will be approved at each stage, and by whom?
CollaborationHow often will you meet, review and see work in progress?
ChangeHow are new requirements, delays and additional costs managed?
QualityHow are accessibility, testing, performance and launch handled?

5. Assess technical judgement, not terminology.

An agency should explain technology in terms of user and organisational needs. Ask why they recommend a platform, how content will be managed, what integrations require and who owns the finished work.

Understand hosting, security, backups, updates and support after launch. The website is a continuing operational asset, not a file handed over on launch day.

6. Compare scope, not just price.

Two proposals with similar headings may include very different amounts of research, content, design, development and support. Compare assumptions, exclusions, deliverables and named people.

A transparent agency should explain what drives the cost and where scope could be adjusted. If budget is constrained, ask how to create a focused first phase rather than quietly removing essential quality.

7. Consider the working relationship.

You may work together for months or years. Notice whether communication is clear, promises are realistic and disagreement feels constructive. The agency should be confident enough to advise and open enough to listen.

Questions worth asking

Who will work on our account? What would you challenge in this brief? What are the main project risks? What do you need from us? How do you define success? What happens after launch?

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Make the decision visible.

Create a simple scorecard around strategic understanding, relevant evidence, team, process, technical fit, commercial clarity and working chemistry. Agree the weighting before final presentations so the loudest opinion does not become the selection method.

References can be useful, particularly for complex or long-term work. Ask previous clients about communication, judgement under pressure and what happened when plans changed.

Choose the team,
not the theatre.

We combine senior strategy, creative, development and performance expertise without unnecessary layers or hand-offs.

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