# SEO Migration Consultant > Our SEO website migration consultant service protects your organic traffic when you redesign, replatform, change domain or restructure URLs. We plan the redirects, test before launch, monitor after launch and fix problems quickly, so a project meant to improve your site does not erase its rankings. URL: https://seoconsultantlondon.online/seo-migration-consultant/ Updated: 2026-10-06 ## Quick answer - A migration changes URLs, templates, platforms or domains, which can lose rankings if mishandled. - We prepare a URL inventory, redirect map, pre-launch tests and a post-launch monitoring plan. - The best time to involve an SEO is before design and development begin, not after launch. - Support covers redesigns, CMS changes, HTTPS or domain moves, mergers and URL restructures. ## Why migrations put rankings at risk Search engines rank URLs, and a migration changes them. Even when the site looks better, pages may lose their history if redirects are incomplete, content changes, internal links break or a template hides content from crawlers. In practice, poorly planned migrations are one of the most common causes of sudden traffic loss, which is why SEO migration services exist. The risk is manageable. With a URL inventory, a precise redirect plan and disciplined testing, most migrations preserve the large majority of their visibility, and many improve it because structure and speed get better at the same time. ## Types of migration we support Different projects carry different risks. We tailor the plan to the change. - Redesigns that change layout, templates and navigation - Replatforming, for example moving to Shopify, WordPress or a headless stack - Domain changes and rebrands - HTTP to HTTPS or subdomain to subfolder consolidation - URL restructures and category re-organisation - Mergers, where two sites combine into one ## Before migration: inventory, benchmarks and planning Preparation decides the outcome. We crawl the existing site, pull every indexed and linked URL from Search Console and analytics, and benchmark rankings, traffic and conversions so success can be measured afterwards. We identify the pages that carry the most value, including those with strong backlinks, and agree which content must be preserved. This stage also produces the requirements document for designers and developers: URL patterns, metadata, headings, structured data and internal links that must carry over. Our website migration SEO checklist outlines the main items. ## During migration: redirect mapping and staging tests Redirect mapping connects every old URL to its best new equivalent with a one-to-one 301 wherever possible. We avoid blanket redirects to the homepage, which lose relevance, and we flatten chains that slow crawling. See 301 redirects and redirect mapping for the principles we follow. On staging we test the build against the plan: indexability controls, canonical tags, robots rules, rendering, page speed and redirect behaviour. Developers receive a clear list of defects ranked by risk, and nothing launches while a blocking issue remains open. ## After migration: monitoring and fast fixes Launch day is the beginning of the most important period. We run a crawl against the live site, confirm redirects, check Search Console for coverage and crawl errors, and compare traffic with the benchmark daily at first. Because migration recovery is faster when problems are caught early, we agree escalation routes with your developers before launch. If visibility does drop, our SEO traffic recovery service diagnoses the cause and plans the fix, whether the issue is technical, content related or a result of an unrelated search update. ## Working with your team and agency Migrations involve designers, developers, content teams and sometimes several agencies. We act as the SEO lead alongside them, attending planning meetings, reviewing wireframes, and signing off tests. This is migration support rather than a one-off report, because the value comes from being present when decisions are made. A technical SEO migration review is also useful when another agency runs the project and you want independent assurance, which complements our technical SEO consulting. ## SEO migration services: help, support and who needs them Teams ask for SEO migration help at different moments. Some call before a brief is written. Others call the week before launch. Both are valid, though earlier is cheaper. Our SEO website migration services cover planning, redirect mapping, staging review and monitoring, and our technical SEO migration services focus on the template-level checks that developers need most. As an SEO web migration consultant, we also provide ad hoc SEO migration support, for example a sign-off review of a redirect file or a launch-day standby. Clients planning an SEO web migration London based or elsewhere should share their timeline early, because it determines which checks are practical. ## What a launch-week plan looks like In the final week we freeze the redirect map, run a last crawl of staging, confirm analytics tags, prepare the post-launch crawl and agree who will be on call. Clear roles reduce risk more than any tool, and a short written runbook means everyone knows what happens if something unexpected appears after the switch. ## Planning an SEO web migration in London Timing matters. Avoid launching during peak trading periods, give the plan enough lead time, and allow budget for post-launch fixes. If you are comparing providers for an SEO web migration London project, ask each one to show a redirect map example, a test plan and a monitoring schedule. Costs depend on site size and complexity and are set out on our pricing page. For the broader consultancy offer, visit our SEO consultant London page. ## Frequently asked questions ### When should an SEO get involved in a website migration? As early as possible, ideally before design begins. Decisions on URLs, templates and content made early are far cheaper to get right than to fix after launch. ### Will I lose rankings during a migration? Some short-term fluctuation is normal, but a well-planned migration should keep losses small and temporary. Poor redirects or removed content cause lasting damage. ### How long does SEO migration support take? Planning typically starts several weeks before launch, with active monitoring for at least two to three months afterwards, depending on site size. ### Do you handle domain changes and rebrands? Yes. Domain moves need redirect maps, Search Console change-of-address steps, and updates to links and profiles. ### Can you review a migration being run by someone else? Yes. Independent review of the plan, staging tests and launch checks is a common use of this service.