Consent isn't a banner, it's your data model
Most UK and EU tracking setups we audit don't meet the rules. They're also quietly losing 30% to 40% of measurable conversions to people who reject tracking.
Benchmarks in this market
- Avg. organic traffic (12mo)
- +289%Avg. organic traffic (12mo)
- Conversion match rate
- 91%Conversion match rate
- Blended CAC reduction
- -37%Blended CAC reduction
- Best-case form completion
- +128%Best-case form completion
Illustrative ranges for engagements of this type, not verified London-specific client data. Orientation, not a guarantee. Your starting point changes the range.
How we work here: Remotely from our San Francisco office, with GMT coverage for calls and travel for kickoffs. We don't claim a London office we don't have.
Clients across every market
What's actually different about London and the South East
London is our main European market, and the rules are what make it different. Under GDPR and PECR, you have to get consent before any non-essential tracking, not after.
In practice, that means a big share of UK and EU traffic can't be measured by default.
Companies that treat this as a compliance checkbox end up optimizing campaigns against a skewed sample. Companies that treat it as a measurement design problem get most of the signal back, legally, through Consent Mode and server-side modeling.
Rejected consent skews your data, not just shrinks it
The people who reject tracking aren't a random sample. If you optimize only to consented conversions, you overweight one group of customers. Most teams never notice the hole in their audience data.
Consent Mode v2 is required for EEA advertising
Google requires it for personalized ads and remarketing to users in the EEA. Set up properly, it recovers modeled conversions. Bolted onto an existing tag setup as just a banner, it does neither.
Cookie banners can cost more than they protect
We've seen a consent banner cover a checkout button and stop orders completely. Compliance is required. But a banner that blocks your main action is a revenue problem you caused yourself, and it's easy to fix.
UK and EU rules are drifting apart
Since Brexit, UK GDPR and EU GDPR have been moving apart. If you serve both, you need to follow both. Assuming one policy covers both is more wrong every year.
What usually moves first in London.
Based on what tends to be the binding constraint for companies in this market. Your audit may point somewhere else. We go where the numbers say.
Industry playbooks relevant in London
Specific playbooks for London businesses
- Paid Ads for E-commerce & DTC
- CRO for E-commerce & DTC
- SEO for B2B SaaS
- SEO for Professional Services
- Paid Ads for Professional Services
- Paid Ads for Fintech & Financial Services
- CRO for Fintech & Financial Services
- SEO for E-commerce & DTC
- CRO for B2B SaaS
- Paid Ads for B2B SaaS
- SEO for Fintech & Financial Services
- CRO for Professional Services
- Analytics & Measurement for E-commerce & DTC
- Analytics & Measurement for B2B SaaS
- Analytics & Measurement for Fintech & Financial Services
The part clients actually remember.
Not the reports. The uncomfortable conversation that changed the trajectory.
Our offices had been competing against each other in Google for years without anyone realizing it. Fixing that alone changed the numbers before any new content was even published.
We were generating 400 leads a month and closing nothing. Now we generate almost no leads and close eight-figure pipeline. Marketing and sales finally look at the same screen.
We hired a marketing agency and got told, in week one, that we had a privacy problem nobody had spotted in two years. That conversation was not what we expected and it was the most valuable thing anyone has done for us.
London questions, answered straight.
Yes. Companies that do it well have an edge over those who treated consent as a legal formality. Consent Mode v2 plus server-side modeling legally recovers a large share of the signal. The ones struggling are running a banner with no measurement setup behind it.
Let's look at your numbers.
A free 30-minute teardown of your funnel, ads, and site, run against what actually works in London and the South East. You keep the findings either way.