Analytics & Tracking

Cross-Domain & Funnel Tracking
See the Full Journey, Not Broken Fragments.for the UK

Built for UK owner-led businesses competing in British search. When a visitor moves from your main website to a booking, checkout, or app site, most analytics setups count them as two different people. We link your sites together so one visitor stays one visitor, from the first click to the final purchase.

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↑ 3.1×
Accurate Cross-Domain Users
85%+
Funnel Completion Visibility
↓ 50%
Broken User Paths Fixed
60+
Multi-Domain Setups

The Invisible Revenue That Lives Between Domains in the UK

What Usually Breaks

  • Users appear as new visitors when they move from marketing site to app or checkout in the UK
  • The ad tags that show where a visitor came from are lost on the second site in the UK
  • Funnel reports show huge drop-offs that are actually just domain changes in the UK
  • Credit for a sale goes to your own checkout site instead of the ad or search that started it in the UK
  • Your remarketing lists (ads shown to past visitors) are split into pieces in the UK

Our Fix

We make the whole journey one visitor. We set up the link that carries the visitor's ID between your sites, use consistent tracking IDs, keep the ad tags (UTM and click IDs) intact, and build funnel reports that treat a site change as a normal step, not a drop-off in the UK.

Cross-Domain & Multi-Property Technical Patterns in the UK

Linker & Measurement Config

  • Cross-Domain Linker: Correct _gl parameter or gtag linker config across all domains. We test with real clicks and referrers in the UK.
  • Measurement ID Strategy: Same web stream across domains when you want one user, or carefully managed separate streams with user-ID stitching when separation is required in the UK.
  • UTM & Click ID Persistence: We ensure gclid, fbclid, msclkid, and UTM values survive the handoff via first-party cookies or server-side enrichment in the UK.

Funnel & Pathing

  • Unified Funnel Explorations: We build explorations that follow users across domains as a single path instead of broken segments in the UK.
  • Subproperty vs Single Property: We choose based on team access needs, data residency, and reporting requirements in the UK.
  • Remarketing & Audiences: Lists that span the full journey so you can reach people who started on one domain and abandoned on another in the UK.

Our Cross-Domain & Funnel Tracking Process

01

Domain & Flow Mapping

Document every domain, subdomain, app, and checkout flow the user can touch. Identify where user identity and click context are currently lost in the UK.

02

Linker & Config Audit

Check current linker implementation, measurement IDs, cookie domains, and whether UTM/click IDs survive each transition in the UK.

03

Cross-Domain Implementation

Fix linker config, add allowLinker / linker domains, ensure first-party cookie scope is correct, and test with real user journeys in the UK.

04

Funnel & Path Reconstruction

Build or repair funnel explorations and pathing reports that treat domain changes as normal steps. Add custom dimensions for current domain and previous domain when useful in the UK.

05

Validation & Attribution Fix

Run controlled tests across domains. Verify user count, session stitching, and attribution credit are correct in GA4 and ad platforms in the UK.

06

Ongoing Monitoring

Set up alerts for sudden drops in cross-domain completion and document the exact expected path for each major user journey in the UK.

FAQ

Common questions

Answers for businesses in the UK.

When do we need cross-domain tracking vs separate properties? expand_more
Use cross-domain (same property or carefully linked) when the user journey is continuous and you want one user record. Use separate properties when the brands, data access, or legal requirements demand complete separation. We help you choose and implement either correctly in the UK.
How does the Google linker actually work? expand_more
It appends a _gl parameter (or uses cookies) that contains the client ID and timestamp. The receiving domain reads it and reuses the same client ID instead of creating a new one. We test with real clicks, referrers, and incognito to make sure it survives in the UK.
What about subdomains? Do they need linker too? expand_more
Subdomains on the same root domain can share cookies with the right cookie_domain setting. We still often add linker as a belt-and-suspenders approach and for cases where the cookie scope is not perfectly aligned in the UK.
How do we keep UTM and gclid when the user crosses domains? expand_more
We persist them in first-party cookies or pass them explicitly in the linker flow or server-side. We also make sure the landing page on the second domain reads and re-applies them if the platform requires it in the UK.
Can we have one GA4 property for marketing and another for the app but still see the full funnel? expand_more
You can use GA4 subproperties, BigQuery to join, or user-ID stitching. Each has trade-offs in access control and modeling. We pick the approach that fits your team structure and data needs in the UK.
What breaks most often in cross-domain setups? expand_more
Missing linker domains in the config, wrong cookie scope, redirect chains that strip parameters, and single-page app routers that do not preserve the _gl parameter. We audit and fix all of them in the UK.
How do you handle cross-domain remarketing audiences? expand_more
We build audiences in the property that sees the full journey, or we use Google Ads / Meta audiences fed from the unified events. Fragmented lists are one of the biggest hidden costs of broken cross-domain tracking in the UK.
Does cross-domain affect session counting and bounce rate? expand_more
Yes - in a good way. Properly implemented cross-domain usually reduces artificial session inflation and makes bounce rate and session duration more accurate because users are not counted as new on every domain change in the UK.
How do you test cross-domain tracking reliably? expand_more
We use a combination of GTM preview on both domains, real clicks from different referrers, incognito windows, and we look at the client ID and session ID in GA4 debugView and BigQuery to confirm continuity in the UK.
What about consent and cross-domain cookies? expand_more
Consent must be obtained (or inherited) on each domain if they are treated as separate sites. We implement Consent Mode on all domains and document the consent handoff if you have a single banner solution in the UK.
Can we track users from a marketing site to a third-party checkout? expand_more
Partially. If the third party supports passing click IDs and you can get post-purchase data back (via webhook or thank-you pixel), we can stitch the beginning and end. Full client-side continuity is usually not possible in the UK.
How do you handle international sites with different TLDs? expand_more
Same principles. We treat .com, .co.uk, .de etc. as cross-domain when the user journey spans them, and we configure linker + consistent measurement accordingly while respecting regional consent rules.
Do we need to change anything in our ad platforms for cross-domain? expand_more
Usually the auto-tagging and click ID passing still works. We make sure the final conversion domain can read and forward the gclid/fbclid so the platforms receive the conversion with the original click context in the UK.
How do you document the expected paths for the team? expand_more
We create a journey map showing every domain transition, which parameters must survive, and what the expected GA4 user and session behaviour should be. This becomes part of the runbook in the UK.
How long does a solid cross-domain fix usually take? expand_more
Simple two-domain marketing + checkout: 1-2 weeks. Multiple brands, subdomains, apps, and international with consent complexity: 3-5 weeks in the UK.

Tired of seeing half your funnel disappear at the domain boundary in the UK?

Get a free cross-domain audit. We will map and fix the full continuous user journey across all your sites in the UK.

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Marketing from $500 USD a month

Month to month, no commitment. One fee covers the pages, the search and ad work and the tracking. Ad spend is separate and stays in your own accounts in the UK.

Starting at

$500 USD per month

Free to cancel with 1 month's notice. Tell us what you sell and where. We come back with what the first month would fix in the UK.

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What $500 a month covers

  • Pages

    Included

    Pages built around the searches your buyers actually type in the UK.

  • Search and ads

    Included

    Search and ads aimed at people ready to enquire in the UK.

  • Tracking

    Included

    Calls, forms and bookings tagged to the search, ad or page behind them in the UK.

Our team

The same people on the audit and on the work

Martin writes every audit and takes the first call. The same team stays on the account. 160+ businesses since 2010 in the UK.

Martin, Founder, strategy and audits in the UK

Martin

Founder, strategy and audits

Writes every audit and takes every first call. On your account from day one, running growth for SMEs since 2010 in the UK.

Yoana, Social and app development in the UK

Yoana

Social and app development

Shapes social strategy and builds practical app experiences that turn attention into action in the UK.

Mike, SEO in the UK

Mike

SEO

Owns technical, local and content SEO so the right buyers find you when demand is highest in the UK.

Robert, Paid media in the UK

Robert

Paid media

Plans and manages paid search and social campaigns around qualified leads in the UK.

Elmer, Analytics in the UK

Elmer

Analytics

Connects tracking, attribution and reporting so decisions are based on revenue-quality data in the UK.

Dino, Design in the UK

Dino

Design

Creates clear brand and conversion-focused design across landing pages, campaigns and product experiences in the UK.

Certified and experienced

Certified where it matters. Accountable for the outcome in the UK.

Verified platform knowledge, 25+ years of hands-on experience, and an operating track record since 2010 in the UK.

Google AdsCertified
Google AnalyticsCertified
Google Tag ManagerCertified
Operating since 2010Proven experience