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UK Services

Zero-Downtime Cutover301 Redirect MappingGDPR Compliant

Website Migration Agency UK

Je CMS verliest verkeer terwijl je slaapt — hier's waarom

99.9%

SEO Retention

Rankings preserved

Downtime

Atomic deploy swaps

95+

Lighthouse Score

Post-migration target

60-day

Monitoring

Post-launch included

What Breaks When You Migrate — And What Actually Gets Fixed

Your site ships 2.8MB of JavaScript before a buyer sees your headline. A headless CMS migration rips out the monolith — WordPress, Drupal, TYPO3, Sitecore — and splits your content layer from the frontend. Your backend becomes an API-driven Supabase or Sanity instance. Your frontend runs Next.js with React Server Components. Pages load in under 800ms. Your hosting bill drops 40–60% the moment you switch to serverless. And when Google's crawler hits your site? It sees clean HTML, structured data, and zero render-blocking scripts. That's the difference between a 92 Core Web Vitals score and a 48. Your rankings stop haemorrhaging the day the migration goes live.

Waar projecten falen

Legacy CMS platforms routinely score below 50 on Core Web Vitals Google demotes slow sites. Every 100ms of delay costs you 1% in conversions.

WordPress and Drupal push security patches monthly — and they break things Unpatched CMS platforms are the #1 attack vector for UK businesses right now.

Hosting costs keep climbing whenever traffic spikes Monolithic CMS servers can't scale elastically, so you're paying for peak capacity 24 hours a day whether you need it or not.

Content editors end up working around the backend rather than with it That leads to inconsistent content and SEO drift creeping across your pages.

If a previous migration attempt tanked your rankings for months, you already know how badly botched 301 redirects and missing schema markup can hurt organic traffic — sometimes permanently. Botched 301 redirects and missing schema markup can tank organic traffic permanently.

GDPR compliance gets bolted onto a stack that was never designed for it ICO fines go up to £17.5M or 4% of global turnover. A cookie consent plugin won't save you.

Compliance

301 Redirect Mapping

We crawl every URL on your legacy CMS and build a complete redirect map before we touch anything. Canonical tags, hreflang attributes, and structured data all transfer intact.

GDPR Data Audit

We run a full audit of personal data sitting in your current CMS. Supabase Row-Level Security and UK/EU-hosted PostgreSQL handle data isolation and encryption at rest.

Zero-Downtime Deploy

Blue-green deployments via Vercel with atomic swaps keep your old site live until the new stack clears automated health checks. Nothing goes live until it's ready.

Content Schema Transform

WordPress ACF fields, Drupal Paragraphs, TYPO3 Flux elements, Sitecore Helix modules — they all map to clean headless schemas. Nothing gets left behind.

SEO Monitoring Dashboard

We watch your rankings through Google Search Console for 60 days after launch. Automated alerts flag ranking drops, crawl errors, and broken redirects the moment they show up.

Auth & Consent Migration

User accounts move to Supabase Auth with OAuth, Magic Links, and JWT. Consent tracking gets rebuilt with proper GDPR-compliant flows and full audit logs.

Wat we bouwen

Score below 50 on Core Web Vitals because your CMS ships 3MB of unused JavaScript

Pull 10,000+ WordPress posts, ACF fields, and media into Supabase via WPGraphQL in under 48 hours

Break production every time WordPress or Drupal pushes a security patch

Extract Drupal entities, paragraphs, and JSON:API data into Sanity with full content modelling intact

Pay for peak server capacity 24/7 even when your traffic flatlines at night

Migrate TYPO3 Flux elements and TemplaVoilà templates using custom scripts that preserve your content structure

Watch content editors build workarounds because the backend fights them

Decompose Sitecore Helix modules and export 50,000+ assets without breaking enterprise workflows

Lose 30–60% of organic traffic when botched 301 redirects kill your ranking history

Configure PostgreSQL, Edge Functions, Realtime subscriptions, and Row-Level Security for your data layer

Face ICO fines up to £17.5M because GDPR compliance got bolted onto a non-compliant stack

Deploy Next.js App Router with ISR, React Server Components, and dynamic 301 middleware that locks in your SEO equity

Ons proces

Migration Audit

First, we crawl your legacy CMS — every URL, custom field, plugin, and data relationship. You get a migration feasibility report with a risk assessment and redirect map before anything moves.

Week 1-2

Architecture & Schema Design

Then we design the architecture. We pick your headless CMS (Sanity, Payload, or Supabase-native), design the content schema, and plan the frontend component structure. Everything gets signed off before a single line of code is written.

Week 2-3

Content Extraction & Transform

Data migration comes next. Automated scripts pull content via API or direct database export, clean and transform it, then load it into the new headless backend with validation at every step.

Week 3-5

Next.js Build & Integration

The build phase delivers a Next.js 15 frontend with App Router, wired to Supabase Auth, Edge Functions, and your headless CMS — with full 301 redirect middleware already in place.

Week 4-7

Zero-Downtime Cutover & Monitoring

Launch runs on Vercel via blue-green deployment. The old site stays live until every health check passes. Then 60 days of post-launch SEO monitoring with weekly reports.

Week 8+

Next.js 15SupabaseVercelSanityPayload CMSPostgreSQLDockerGitHub Actions

Veelgestelde vragen

Hoe lang duurt een CMS-migratie naar Next.js?

De meeste migraties duren 6-10 weken, afhankelijk van het aantal pagina's en de complexiteit van het CMS. Eenvoudige WordPress-sites met minder dan 2.000 pagina's zijn klaar in ongeveer 6 weken. Enterprise Sitecore- of Drupal-migraties met aangepaste modules en 50.000+ pagina's duren 12-16 weken. Elk project begint met een scoped audit — geen verrassingen.

Verlies ik mijn Google-rankings tijdens de migratie?

Nee. We bouwen een volledige 301 redirect-kaart vóór cutover, waarbij elke URL, canonical tag, hreflang-attribuut en gestructureerde data markup behouden blijft. Na lancering controleren we 60 dagen lang Google Search Console en repareren we crawl-problemen binnen 24 uur. Onze klanten behouden 99,9% van hun organische verkeer.

Is Supabase GDPR-compliant voor Britse bedrijven?

Ja. Supabase voert EU-gehoste PostgreSQL uit met encryptie in rust en in transit. We configureren Row-Level Security voor data isolation, herbouwen consent tracking via Supabase Auth en zorgen ervoor dat alle verwerking van persoonsgegevens voldoet aan UK GDPR en ICO-vereisten. Je gegevens verlaten geen EU-datacenters.

Wat betekent zero-downtime migratie?

Je bestaande site blijft gedurende de hele build live. Op cutover day deployen we naar Vercel met behulp van blue-green deployment — de DNS-switch is atomic en instant. Geautomatiseerde health checks verifiëren elke pagina voordat verkeer naar de nieuwe stack verplaatst wordt. Gebruikers raken nooit een foutpagina.

Kun je aangepaste WordPress-plugins en ACF-velden migreren?

Ja. We extraheren Advanced Custom Fields, custom post types, WooCommerce-producten, Gravity Forms-inzendingen en plugin-specifieke gegevens via WPGraphQL of REST API. Aangepaste functionaliteit wordt herbouwd als Next.js-componenten met behulp van Supabase Edge Functions of native headless CMS-functies — geen plugin-afhankelijkheden verplaatst.

Hoeveel kost een website migratie in het Verenigd Koninkrijk?

Eenvoudige WordPress-migraties beginnen bij £10.000 voor sites met minder dan 2.000 pagina's. Mid-market Drupal- of TYPO3-projecten met aangepaste content models kosten doorgaans £20.000-£40.000. Enterprise Sitecore-migraties met multi-site, multi-language en complexe data-relaties beginnen bij £60.000. Alle offertes hebben een vaste prijs — geen verborgen kosten.

CMS Migration from £10,000

Fixed-fee. 60-day post-launch SEO monitoring included.

See all packages →

Next.js Development Core Web Vitals Optimization WordPress to Next.js Migration

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