Dolphin Analytics is a Google Analytics agency for agencies and in-house marketing teams. We set up and migrate GA4, build and maintain Google Tag Manager and Consent Mode, and reconcile what GA4 says against your store and your ad platforms. One property or a whole estate of them: the work scales to what you run. Every fix is proved against source data before we call it done, and you keep the access, the documentation and the setup at the end.
Axon Garside 
connective3 
AKQA 
WPP 
Omnicom 
Toyota 
Volvo 
Cedar 
Preqin 
Mediahub 
Tesco 
Heidi 
ElevateJet 
Illumicrate 
Octopus EV 
Noisy Beast 
Incisive Media 
Boltahead 
Robot Zebra 
Pixated 
Passionfruit 
Ada Ventures The same data problems come up for almost every marketing team we meet, agency-side or in-house. They usually sound like this.
GA4 says one thing, Meta Ads says another and Shopify says a third. Nobody can explain the gaps, so nobody fully trusts any of the numbers.
The board wants to know what marketing returned. The dashboards claim plenty, the bank account says less, and there's no defensible number in between.
Without analytics we can lean on, we're not winning the pitch, keeping the clients we've got, or upselling the ones who stay. Good data is how an agency proves its worth.
If any of these sound like your week, talk to us: send a message, or book a call straight away.
The concrete work behind the pillar, in plain terms.
We build clean GA4 properties from scratch, or clean up a migration that was rushed and never finished. Key events, Consent Mode and the ad platform links get configured and tested before we call it done.
We build and maintain Tag Manager containers and document them as we go. Consent Mode is configured to meet UK GDPR without quietly dropping traffic.
We check what GA4 reports against your store, your CRM and your ad platforms until the numbers agree. Where they don't, we show you exactly where the gap is.
Someone who already knows the setup is there when your site, your campaigns or your properties change. Work is scoped and documented so nothing depends on memory.
The call usually comes after someone has stopped trusting the numbers. An in-house team runs a GA4 property, or several, and a Consent Mode setup nobody fully understands. An agency has client accounts where GA4 disagrees with the ad platform and nobody can explain why. The person who built the setup has often moved on.
Most faults trace back to a handful of causes. A GA4 property gets migrated in a rush and never cleaned up. Consent Mode gets set up wrong, or skipped entirely. A Tag Manager container sits untouched since the person who built it left.
A checkout or platform change quietly breaks the tracking. An ad platform reports revenue the store never recorded. Any one of these is a bad week on its own. Across several properties they compound.
We set up, audit and fix GA4 and Tag Manager for agency and in-house clients most weeks, on single properties and on multi-property, multi-brand setups. The pattern repeats often enough that we know which order to check things in.
We start with access. Every property in scope needs read-only access to GA4 and Google Tag Manager for the diagnosis, and editor rights only once fixes are approved. We also need read-only access to the ad platforms. Finally, we need a view of the store or CRM you want the numbers to match.
Then we diagnose each property in turn. Every event, trigger and variable gets checked against what actually fires. GA4 gets reconciled against a source of truth, such as Shopify orders or CRM deals.
That diagnosis is our paid audit, scoped and quoted before it starts. You get a written findings report that names each fault. It says what the fault is costing you, and what fixing it involves. If you want us to do the fixing, we do it in your own containers. We prove each change against live data, and document what changed and why, property by property. If your team prefers to fix things themselves, the reports are written so they can.
At the end you own everything: the access, the containers, the documentation. Some clients stop there. Others keep us on as cover instead. Cover means someone who already knows the setup is there when a site changes, a campaign launches, or the person who built it moves on.
For an agency's ecommerce client, a Shopify Checkout Extensibility upgrade broke conversion tracking. We restored accurate tracking within 48 hours. That avoided an estimated $1.5M in wasted ad spend while the fault would otherwise have stayed live.
For another client, our compliance work helped avoid exposure to a potential GDPR fine of up to €20M. The same fix helped the agency behind the account protect a six-figure retainer.
Scale is where the numbers show. We improved Volvo's marketing conversion rates by 20% across all channels. We saved Incisive Media around £100k and 2,600 hours of reporting a year, and they made 3x their investment reselling that reporting to clients. We have partnered with 20+ agencies across the UK, Europe and US.
For a subscription box brand, we reconciled the store against its ad platform. We found that 71% of the purchases the ad platform claimed had never clicked the ad. The real return on that spend was a fraction of what the dashboard showed. The channel was still worth running once the numbers were true.
Draft narrative
"Meta revenue up 23% month on month"
A human analyst reviews every deliverable
Before · by hand
20 hrs on reporting
After · automated
under 5 min per report
The recovered time went to strategy and upsells
We scope and quote every property before any work starts. That is true whether it is a fresh GA4 set-up, a migration clean-up, or a fix to something already broken. Nothing is priced until we know what we are looking at.
Three things drive the quote: how many properties are involved, how much needs fixing, and whether you want a one-off fix or ongoing cover. A single, clean property is a different job from six properties with three consent regimes between them.
We do not publish a rate card. The same fault can be a day's work on one property and a week on another. Every quote says what is included, what you get back, and when. There is no open-ended day rate running against you.
Agencies white-label us as their analytics arm. We work inside each client's GA4 and Tag Manager under your brand. We can cover as many client accounts as you need. You get the written record to show the client. One agency resold our fix at a 40% markup.
That turns a tracking problem you were absorbing into work you can bill for. In-house teams use us directly, usually because paid media is spending against conversions nobody fully trusts, or because the one person who understood the setup has moved on.
We fix the setup and explain it in plain words. Then we leave your team able to run it. We stay on as cover if something changes again.
reporting becomes a retainer product, not a weekly cost
Tell us which properties are giving you trouble in a message, or book a 30-minute call straight away. Either way you hear from a person: a message gets a considered view of what is probably broken and what fixing it would involve within one working day. No sales script to sit through, and no obligation to go further.
Sonar is the other way in. Run your site through it if you want evidence before we talk. It scans from the outside, the way a visitor's browser sees the page. It reports the tags, pixels and consent setup it can prove are running. Bring the result to the conversation and we will take it from there.
Agencies and in-house teams we plug into as their analytics bench, on what it's like to have us on the team.
Partnering with Dolphin Analytics resonates with us because it gives us extra capacity with heavily fluctuating demand in this current climate around new tracking implementation technologies. It's the offering of dealing with experts with a no-fuss approach. They're so valuable, solving our biggest pain points by providing on-demand expertise. In any agency setting there is always a lack of capacity for niche skilled expertise, and Dolphin Analytics provides that.
Alan Ng Chief Innovation Officer, Connective3 Marketing agency, 150 people Working with Dolphin Analytics has been a pleasure. Olam and his team were brought on to help us work through client issues outside our usual area of operations. Their team worked seamlessly alongside Axon Garside for our clients. They led the project, identifying the solution swiftly, before developing the fix and completing the jobs rapidly. Dolphin Analytics' communication was great throughout, keeping my team updated. This is the beginning of a fruitful business relationship between both businesses.
Spencer Montagu Marketing Director, Axon Garside B2B marketing agency, 20 people Olam and his team joined us when our product analytics was still in its infancy. Within weeks they'd resolved a host of issues with our Heap events and reports, giving us a much clearer picture of how customers used the platform. They then helped our product and UX team embed a framework for experimentation, so we could validate ideas and deliver value far more quickly: a real step change in how we build products. Olam is a genuine people person, and his collaborative approach was hugely appreciated. I extended the engagement numerous times and am hugely grateful for the change he helped enact.
Jack Levy Head of Product, Preqin In-house product team Data can be complex and, more often, it is made unnecessarily so by the people within it. However, Dolphin Analytics' skill is in understanding what's possible, what's necessary, and making that easily understood and implemented. It's rare to have such consistently good and reliable data expertise, but Dolphin Analytics always delivers.
Dino Myers-Lamptey Managing Director, Mediahub Marketing agency, 500 people Dolphin Analytics joined our team and quickly became a valuable asset that we wanted to extend onto other projects. They are able to think critically, stay solutions-oriented, and know how to work with others, bringing their expertise and point of view on data and analytics. Beyond the technical skill across various analytics tools, they have broad experience with different types of analysis, which makes them able to step up to different challenges.
Payam Cherchian Data & Analytics Director, AKQA (now EssenceMediacom) Web & design agency, 40 people We turned to Dolphin Analytics when we had a data project we needed specialist input on. The team took time to understand our challenges, ambition and the nuances of our business to propose a bespoke solution. They broke down complex processes in a way we could communicate across our teams and clients to build into our roadmap.
Joseph Costello Global Strategy & Insights Director, Cedar Swipe / scroll → 1 / 6
Dolphin Analytics has helped an agency avoid exposure to a potential GDPR fine of up to €20M, saved a media agency 20 hours a week on reporting, and shown brands which of their ad numbers reflect reality.
Connective3 · Performance agency
20+ projects
delivered · 5 clients
Tracking, visualisation and insight delivered across their client roster, helping keep retainers worth multiple six figures combined.
How: embedded team · tracking fixes · Piano Analytics · dashboards
Toyota · via AKQA
3x conversion rate
after the repaired journey
People were dropping out through hidden gaps in the journey. The work found the weak points, closed them with experiments, and kept more of the same traffic moving to the end.
How: insight · conversion funnel repair · experimentation
ElevateJet · Private aviation
<3 months
from zero to 8 channels wired
Tracking, CRM attribution, BigQuery and Looker dashboards from a standing start; their agency's performance finally provable, and a new partner onboarded on the evidence.
How: 3 sites → HubSpot · BigQuery + Looker · new-agency onboarding
Illumicrate · with Noisy Beast
5x ROAS
Confirmed against Shopify sales
We implemented a new tracking infrastructure and analysed performance across channels. The work confirmed Meta was profitable, giving the team confidence to increase spend and use better measurement to grow the waitlist.
How: full tracking setup · cross-channel analysis · profitable Meta spend confirmed
Heidi · Ski travel
2 weeks
From zero to launch-ready dashboards
Looker Studio built from scratch for a team with no data resource, ready in two weeks to run Black Friday on live numbers and see what to promote.
How: Looker Studio from scratch · launch support · no internal resource needed
Sonar scans any site from the outside and reports the GA4, Tag Manager and consent setup it can prove is running, in one click with no account. Run it on each property before the conversation and bring us the results.
Why it exists: you can't fix tracking you can't see. Sonar shows us both the truth before any work starts.
Scan your site
Every Dolphin Analytics engagement starts with talking to us. Send a message, or book a call straight away. From there it's a scoped project or an ongoing value-based retainer.
Tell us what's going on with your data, or grab a 30-minute slot on the calendar straight away. No sales script to sit through either way.
If you booked a call, we come to it with your message already read. If not, we reply within one working day with a considered view of the problem. Sometimes we need view-only access to the relevant systems to see what's happening for ourselves. We'll tell you what we need and why.
Pricing is value-based on both: you pay for the outcome, not the hours.
We fix one scoped thing.
We run your analytics, ongoing.
We set up and migrate GA4, build and maintain Google Tag Manager and Consent Mode, and reconcile GA4 against your ad platforms and your store. We run this as ongoing cover across as many properties as you need, not a single install and goodbye. We set up, audit and fix GA4 and Tag Manager for agency and in-house clients most weeks.
We do both, and the people and the method are the same. Come to us as an agency when the work spans several properties, platforms or client accounts and you want one partner across all of it. For a bounded job such as a single diagnosis or rebuild, the same people do it as a consulting engagement.
Yes. Several GA4 properties, or several client accounts, are no problem. Each property is scoped and quoted on its own, and we keep the documentation consistent across all of them so nothing depends on memory. A single property is just as welcome.
We scope and quote every property before any work starts. The quote depends on how many properties and containers are involved, what needs fixing, and whether you want a one-off setup or ongoing cover. We don't publish a rate card, because the same job varies a lot between accounts.
Yes. Agencies white-label us as their analytics arm, working inside each client's GA4 and Tag Manager under your brand. The access is agreed with your client, and the work carries your name. One agency resold our fix at a 40% markup.
Read-only access to GA4 and Google Tag Manager for each property is enough for the diagnosis. Editor access comes later, once you approve fixes. We also need read-only access to the ad platforms and the store or CRM you want reconciled. One contact who can answer questions about the site helps too. We give you the timeline with the quote.
Yes. Cleaning up a rushed GA4 migration, or a container someone started and never finished, is some of our most common work. We set up GA4 properly and document it so the next person, whether that is you or us, isn't guessing.
Google Tag Assistant checks your GA4, Google Ads and GTM tags fire correctly. The checks we run on a site, what the tool misses, and a faster full scan.
9 Sept 2026GTM vs GA4: Google Tag Manager deploys your tracking tags, GA4 collects and reports the data. How we set both up for clients, and which you need first.
8 Sept 2026GA4 DebugView not working? Why it shows no events, how to switch on debug mode with GTM Preview or Tag Assistant, and the order we check tags for clients.
Tell us what's broken, or grab a time. Either way you hear from a person, not a sales script.
Thirty minutes on Google Meet with the founder.
Open the calendar in a new tab
The booking lands on the same record as your message.