By Marc Alexander

This guide is written by Marc, an independent Google Analytics consultant in London, so read it with that in mind. It tries to be fair to both.

What an independent consultant does well.

The senior person does the work

At an agency, the person who sold the project is often not the person who builds it. With an independent consultant they are the same person: designing, testing, debugging and documenting the setup themselves.

Built around your business, not a template

Many agencies work from a standard GA4 blueprint, which is efficient but generic. A consultant usually designs events, parameters and reports around your funnel, your key events and your product.

Plain explanations and a team that learns

A good consultant explains what is tracked and why in plain language, and hands over documentation and training so your team can run it without them.

Privacy built in from the start

Consent Mode, data minimisation and keeping personal data out of analytics should be part of the build, not an add-on. Specialists tend to treat it that way because it is their whole job.

Flexible scope and quick turnaround

Without layers of process, a consultant can take on a single audit or a two-week fix, respond quickly, and stop when the job is done. There is no long retainer unless you want one.

When an agency is the better choice.

Agencies are the right call more often than consultants like to admit:

  • You want one partner for everything. Strategy, paid media, creative, SEO and analytics under one roof, with one point of accountability.
  • You need capacity. A large rollout across many sites or markets can need several people working at once, which one consultant can't provide.
  • You need cover. An agency can keep work moving when someone is ill or on holiday. An independent consultant is one person.
  • Analytics serves the media work. If the main job is running campaigns, having the people who buy the media also own the tracking can work well, as long as someone checks it independently now and then.

Plenty of businesses use both: an agency for marketing, and a specialist for measurement or for a second opinion on the agency's setup.

What to ask either one.

Whoever you choose, these questions separate good suppliers from the rest:

  • Who will actually do the work, and who checks it?
  • Will GA4, GTM, Looker Studio and the consent platform be set up in accounts you own, with admin access for your team?
  • What documentation will you get at the end?
  • How will they test that consent works, and that revenue matches your sales system?
  • What happens when the person you deal with is on holiday or leaves?
  • Is there a minimum contract, and what is the notice period?

The account question matters most. Some suppliers create GA4, GTM or Looker Studio under their own accounts, which leaves you dependent on them. Everything should live in accounts you own, and be documented well enough to hand to someone else.

About Marc.

Marc has 10 years in digital analytics and holds the Google Analytics 4 certification. Before starting Metric Owl he worked in-house at Knight Frank (as Senior Web Analytics Specialist), WorldFirst and VisitBritain.

At Knight Frank he led the rollout of new web analytics across the redesigned global websites and connected GA4 to internal systems, so site behaviour could be tied to real outcomes such as property sales.

He works in three areas:

What it costs.

Fixed starting prices, with no long-term contract:

Full details are on the pricing page. Larger projects are scoped and quoted.