Technical SEO · UK

Technical SEO Agency in the UK That Gets You Found on Google and AI Search

Google can only rank the pages it can crawl, render and trust. We find the problems that stop that from happening on your site: pages left out of the index, slow templates, broken redirects, duplicate URLs and missing structured data. Then our developers fix them in your code, not in a spreadsheet you have to hand to someone else. You get a faster site and cleaner indexing, and your content finally has a fair chance to rank.

See our results
  • Google Search
  • Google AI Overviews
  • ChatGPT
  • Gemini
  • Bing
Illustration of a technical SEO dashboard with a 96 health score, passing Core Web Vitals and a clean crawl report
96/100Typical health score after fixes
Common problems

Is Your Website Invisible to the Customers Searching for You?

Good content cannot rank on a site that Google struggles to read. These are the technical problems we find most often.

Illustration of a site audit showing the technical seo issues that hold rankings back
  1. 01
    Indexing

    Important Pages Are Missing From Google’s Index

    A stray noindex tag, a blocked folder in robots.txt or a wrong canonical can quietly remove your best pages from search. You keep publishing, and nothing shows up.

  2. 02
    Page speed

    Slow Pages Are Failing Core Web Vitals

    Heavy images, render-blocking scripts and slow hosting push Largest Contentful Paint past four seconds on mobile. Visitors leave before the page loads, and rankings drop with them.

  3. 03
    Crawling

    Broken Links and Redirect Chains Waste Crawl Budget

    Old redirects pointing at more redirects, 404 pages still linked from the menu and parameter URLs Google keeps finding all slow the crawl and leak link value.

  4. 04
    Duplication

    Duplicate URLs Split Your Ranking Signals

    HTTP and HTTPS versions, trailing slashes, filters and print pages create copies of the same content. Google picks one, often the wrong one.

What we do

Our Technical SEO Services

Each fix is scoped, built by our own developers and checked in Search Console after release.

Get a free technical audit
02

Core Web Vitals and Page Speed

Image compression, lazy loading, script clean-up and caching, aimed at the LCP, INP and CLS scores Google uses.

  • LCP
  • INP
  • CLS
Get a quote
03

Crawling and Indexing Fixes

Robots.txt, XML sitemaps, canonicals and noindex rules set so Google spends its time on the pages that matter.

  • Robots.txt
  • Sitemaps
  • Canonicals
Get a quote
04

Structured Data and Schema Markup

Organisation, LocalBusiness, Product, FAQ and Article schema that passes validation and helps search engines read your pages.

  • JSON-LD
  • Rich results
  • Entity data
Get a quote
05

Site Migrations and Redirects

Redirect maps, pre-launch checks and post-launch monitoring, so a new site or domain keeps the rankings you already have.

  • Redirect maps
  • Launch checks
  • Monitoring
Get a quote
AI search

Technical SEO for AI Search: Get Cited in ChatGPT, Gemini and Google AI Overviews

AI assistants build their answers from pages they can fetch quickly and understand without guessing. If your content only loads through JavaScript, sits behind slow servers or has no structured data, it is harder for them to quote you, even when your answer is the best one.

We make your key pages easy for both search crawlers and AI crawlers to read: clean HTML, fast responses, clear entity markup and an llms.txt file where it helps.

Illustration of an AI assistant answer citing a business, with entity signals and structured data
01Crawler access

Robots rules that let the AI crawlers you want in, and keep the rest out.

02Structured data

Schema that states who you are, what you sell and where you work.

03Server-side content

Key text in the HTML, so it is readable without running scripts.

04Fast responses

Quick server times so pages are fetched in full, every time.

How we measure AI visibility

We track how often your brand and pages are cited in ChatGPT, Gemini and Google AI Overviews for a fixed set of questions, and report the change each month alongside your normal rankings.

  • ChatGPT62%
  • Gemini48%
  • AI Overviews71%
Results

Technical SEO: What We Measure

Clear, accountable reporting. The figures below are tracking priorities, not unverified client success claims.

View all case studies
✓Measured each month
Qualified enquiries

Enquiries from your ideal customers

Measure calls and form submissions from organic visitors, with attribution checked against analytics.

✓Measured each month
Website health

Technical improvements that last

Review crawl errors, speed, indexing and the health of important landing pages.

How we work

Our Technical SEO Process

Technical work is only useful once it is live. Our process covers the audit and the fixes, then checks that Google has picked them up.

  1. 1. Crawl and Audit

    We crawl the whole site and compare it with Search Console, logs and speed data to find what is broken.

  2. 2. Prioritise Fixes

    Every issue is ranked by how much traffic it affects and how long it takes to fix.

  3. 3. Fix in Your Code

    Our developers make the changes on a staging site, or brief your team with exact tickets.

  4. 4. Test and Release

    We check every fix before launch, then submit the changed pages to Google for recrawl.

  5. 5. Monitor and Report

    Weekly crawls catch new problems early, and a monthly report shows what changed.

Pricing

How Much Does Technical SEO Cost in the UK?

Most UK agencies charge £800 to £3,000 a month for ongoing technical SEO, depending on the size of the site. These are our starting prices.

Technical SEO packages and what each includes
EssentialsFrom £800/monthSites up to 100 pagesMost popularGrowthFrom £1,500/monthSites up to 2,000 pagesLarge SiteFrom £3,000/monthEcommerce and 2,000+ pages
Full technical auditIncludedIncluded
Core Web Vitals fixesIncludedIncluded
Monthly crawl and health reportIncludedIncluded
Developer hours for fixes4 hrs24 hrs
Structured data buildNot includedIncluded
Log file analysisNot includedIncluded
Faceted navigation and crawl budget workNot includedIncluded
Get a quote Get a quote

Need a one-off audit only? A standalone technical audit starts at £750. Prices exclude VAT.

What drives the cost

01Number of pages

More templates and URLs mean more to crawl, test and fix.

02Your platform

Custom builds and headless sites take longer than WordPress or Shopify.

03Who makes the fixes

Prices include our developers. Briefing your own team costs less.

04Migrations

A site move or redesign is quoted as a separate project.

Every month

What You Get Every Month

Technical SEO is not a one-off clean-up. Sites change every week, so we keep checking.

  • Monthly technical report

    Health score, Core Web Vitals, index coverage and the fixes we shipped.

  • Weekly crawl alerts

    We flag new 404s, noindex tags and redirect loops before they cost you traffic.

Illustration of a technical seo report with traffic, enquiries and keyword positions
  • Call with your technical lead

    A monthly call to go through the report and agree what comes next.

  • 3-month minimum, then rolling

    After the first three months you can stop with 30 days’ notice.

Industries

Industries We Help Rank

We have run technical seo for businesses in these sectors, so we already know how their customers search.

  • Trades and home servicesPlumbers, electricians, heating and roofing firms
  • AccountantsPractices competing for local and specialist searches
  • Law firmsSolicitors and legal services with high-value enquiries
  • PropertyEstate agents, lettings and property developers
  • Healthcare and clinicsDental, aesthetics, physio and private clinics
  • Retail and ecommerceOnline shops selling across the UK and abroad
  • ConstructionBuilders, contractors and building suppliers
  • Education and trainingTraining providers, tutors and schools
Why CodeCrackers

Why Choose CodeCrackers as Your Technical SEO Agency

Most SEO agencies hand you a list of problems. We have developers in-house, so we fix them too.

Talk to our Technical SEO team
  • 01
    Developers, not just consultants

    Our team builds websites every day, so fixes are made properly in your code.

  • 02
    Plain-English reporting

    Every issue explained in terms of traffic and enquiries, not jargon.

  • 03
    No long lock-in

    Three months to start, then month to month. Stay because it works.

  • 04
    UK account management

    One named technical lead who knows your site and answers your emails.

FAQs

Technical SEO FAQs

Short answers to the questions we hear most about technical SEO.

Still have a question?

Send it to us. A specialist, not a salesperson, will reply within one working day.

Ask our SEO team

Technical SEO is the work that helps search engines crawl, render and index your website. It covers site speed, mobile usability, crawl rules, redirects, duplicate content, structured data and security. It does not change what your content says; it makes sure Google can find and read it.

FREE AUDIT

Get a Free Technical SEO Audit

Tell us your website and we will crawl it, check its speed and indexing, and send you the problems that are costing you traffic, with what we would fix first.

  • Full crawl of up to 500 pages
  • Core Web Vitals check
  • Indexing and redirect issues
  • Top 10 fixes, in order

Enquire about Technical SEO