Dolphin Analytics is a web analytics agency for agencies and in-house marketing teams, based in London and working across the UK, Europe and the US. We set up and fix GA4 and Google Tag Manager, sort out Consent Mode, and reconcile what your analytics says against your store, your CRM and your ad platforms. 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.
Analysts, data scientists and data engineers are slow to hire and expensive to keep, and one hire rarely covers all three skill sets.
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, clean up rushed migrations and fix what's broken. Key events, Consent Mode and the ad platform links get tested before we call it done.
We clean up and document Tag Manager containers so anyone can see what fires and why. Consent Mode is configured to meet UK GDPR without quietly dropping traffic.
We reconcile GA4 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 or campaigns change. Every change is documented, so nothing depends on one person's memory.
The call usually comes after someone has stopped trusting the numbers. A London ecommerce brand sees GA4 disagree with Shopify. An agency has client accounts where the ad platform claims sales the store never recorded. A B2B team can't say which campaigns turn into deals.
Most of it traces back to a handful of causes. A GA4 migration was rushed and never cleaned up. Consent Mode was set up wrong, or skipped. A Tag Manager container has sat untouched since the person who built it left. A checkout or platform change quietly broke the tracking, and nothing flagged it.
Hiring is often the other half of the problem. Analytics people are hard to find and slow to hire, and the one who understands the setup can leave at any time. We set up, audit and fix GA4 and Tag Manager for agency and in-house clients most weeks, so we know which order to check things in.
We start with access. Read-only access to GA4 and Google Tag Manager is enough for the diagnosis, with editor rights only once fixes are approved. We also need read-only access to the ad platforms, and a view of the store or CRM you want the numbers to match.
Then we check the setup against what actually happens. Every event, trigger and variable gets tested against what fires on the live site. 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, what it's costing you, and what fixing it involves. If you want us to fix it, we work in your own accounts and prove each change against live data. At the end you own everything: the access, the containers and the documentation.
Booking numbers can look healthy right up until someone traces them. Here's what we found. Working through a marketing agency, across a 16-hotel group we found duplicate purchase events inflating booking counts, plus untagged booking subdomains and a failing tag container. It gave them their first accurate property-level view of direct bookings.
Sometimes the question is where deals really come from. Here's what the attribution work showed. For a private aviation company, 88.6% of contacts with deals had no web attribution at all: 443 of 500 were offline or CRM-entered. Attribution work then traced a $767,500 charter enquiry back to a single organic search visit.
When a platform change breaks tracking, speed matters. Here's one example. Restored accurate conversion tracking within 48 hours after a Shopify Checkout Extensibility upgrade broke it, avoiding an estimated $1.5M in wasted ad spend and mis-optimised Google Ads. And here's the reach behind it. Partnered with 20+ agencies across the UK, Europe and the US.
Draft narrative
"Meta revenue up 23% month on month"
A human analyst reviews every deliverable
We scope and quote every property before any work starts. That holds for a fresh GA4 setup, a migration clean-up or a fix to something already broken. Nothing is priced until we know what we're 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 setups between them.
We don't publish a rate card. Every quote says what's included, what you get back and when. There's 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, and you get the written record to show the client. That turns a tracking problem you were absorbing into work you can bill for.
In-house teams use us directly. Usually paid media is spending against conversions nobody fully trusts, or the one person who understood the setup has moved on. We fix the setup, explain it in plain words and leave your team able to run it.
London is our base, and we work the same way with teams across the UK, Europe and the US. Most of the work happens inside your accounts, so where you sit makes no difference to how fast it moves.
reporting becomes a retainer product, not a weekly cost
Tell us what's going wrong in a message, or book a call straight away. Either way you hear from a person. A message gets a considered view of what's probably broken and what fixing it would involve within one working day. No sales script, 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, and reports the tags, pixels and consent setup it can prove are running. Bring the result to the conversation and we'll 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 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 our team 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 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 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 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 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 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.
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
Car maker · via a creative agency
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
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
Subscription retailer · with an agency
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
Ski travel company
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 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.
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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.
Yes. London is our base, and we work remote-first. Most of the work happens inside your GA4 and Tag Manager accounts, so calls and shared screens do the job. We work with teams across the UK, Europe and the US the same way.
We set up and fix GA4 and Google Tag Manager, configure Consent Mode so it meets UK GDPR without dropping more data than it has to, and check your numbers against your store, CRM and ad platforms. When GA4 and the ad platform disagree, we find out why. We set up, audit and fix GA4 and Tag Manager for agency and in-house clients most weeks.
Yes. Agencies white-label us as their analytics arm, working inside each client's GA4 and Tag Manager under your brand. In-house teams come to us directly. The people and the method are the same either way.
We scope and quote every property before any work starts. The quote depends on how many properties and containers are involved, how much needs fixing, and whether you want a one-off fix or ongoing cover. We don't publish a rate card, because the same fault can be a day's work on one site and a week on another.
Yes. GA4 is usually where the problem shows, but the cause often sits in Tag Manager, the consent banner, the checkout or the ad platform connections. We work across all of it, so you're not passing the problem between three suppliers.
Read-only access to GA4 and Google Tag Manager 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. We give you the timeline with the quote.
Many teams do. Analytics hires are hard to find and slow to land, and one person leaving can take the whole setup with them. We cover the work as documented, ongoing support, so nothing depends on memory and your team can see exactly what changed.
Shopify custom pixel not tracking? Consent settings, the lax sandbox, Customer events, Pixel Helper and duplicate app pixels: the checks we run to fix it.
5 Oct 2026How to remove bot traffic from GA4: the hostname filter, report segments, GTM exceptions and Cloudflare, plus the checks we run to prove a spike is fake.
5 Oct 2026Looker Studio GA4 quota errors: what each message means, the owner's credentials, Extract Data and BigQuery fixes, and the order we run them 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.