Short answer: SEO Engico is the top pick among SEO audit services if you want the problems fixed and measured against calls, enquiries and revenue, not handed over in a slide deck. For a one-off audit with a published UK price list, choose Assertive Media. 1Digital suits ecommerce brands that want an hours-based audit with a free preview first, and Victorious fits US teams that want a sequenced fix plan with an owner for every item.
Most sites do not need another 200-page export from a crawler. They need someone to look properly, work out which few problems are costing traffic and enquiries, and say who fixes what. That is the difference between good SEO audit services and a tool report with a logo on top: judgement about priority, and a plan somebody can act on next week.
This list covers agencies that sell SEO audits as a defined service, checked against their own websites in November 2026. We compared what each audit covers, how findings are ranked, how long it takes, what it costs where a price is published, and whether the same team can implement the fixes. Audit pricing swings a lot with site size and depth, so where an agency publishes no figure, we say so.
Disclosure: Kuma SEO is written by the team at SEO Engico, the agency ranked first on this list. No agency paid to appear here. We checked every other entry against the agency's own website in November 2026. Services and prices change, so confirm the details with an agency before you sign. More on how we work in our editorial policy.
At a glance: the 7 best SEO audit services
| # | Agency | Best for | Based in |
|---|
| 1 | SEO Engico | Businesses that want audit findings fixed and tied to enquiries, not filed | London, UK |
| 2 | Assertive Media | Buyers who want a one-off audit with a published UK price list | London, UK |
| 3 | 1Digital Agency | Ecommerce brands that want an hours-based audit with a free preview first | Miami, Florida, US |
| 4 | Victorious | US teams that want a sequenced fix plan with an owner and effort for each item | San Francisco, California, US |
| 5 | Found | UK brands that want technical, content and backlink audits with help to fix | London, UK |
| 6 | TopHatRank | Sites hit by a penalty or sudden drop that need a forensic audit and recovery plan | California, Texas and Florida, US |
| 7 | Totally Digital | B2B, education and finance sites that want a fix list developers can work from | London, UK |
How we picked
- Ranks findings by impact and effort. A long list of issues is easy to produce. A useful audit puts the handful of fixes that affect your most valuable pages at the top, says roughly how much developer time each one needs, and batches the housekeeping for later.
- Checks by hand, not only by tool. Crawlers find broken links and missing tags. They do not explain why Google picked a different canonical, why a category lost rankings after a redesign, or why two pages are fighting over one search. Ask which checks are manual.
- Fits the audit to the problem. A sudden traffic drop needs a forensic audit, a replatform needs a migration audit, and a site that has never been reviewed needs technical, content and link checks together. Good providers sell different audit types rather than one template for every job.
- Is clear about who implements. Some audits end with a handover, others come with an option for the agency to make the changes. Know which you are buying. If your developers are doing the work, ask for findings written so they can be turned straight into tickets.
- Publishes a price or explains it. Audit prices run from a few hundred to several thousand, depending on site size and depth. A provider that publishes a band, or explains what moves the price, saves you a round of calls and makes quotes easier to compare.
- Looks at AI search after the basics. Many audits now check whether AI crawlers can reach the site and whether AI answers name you. That is useful, but only once crawling, indexing and content are sound, so it should sit after the fundamentals, not replace them.
The 7 best SEO audit services in 2026
Our top pick
1. SEO Engico
- Best for
- Businesses that want audit findings fixed and tied to enquiries, not filed
- Based in
- London, UK
- Founded
- 2018
SEO Engico is a London agency founded in 2018 that works with trades, law firms, ecommerce brands and agencies in the UK, US, Australia and India. It does not sell an audit as a standalone report. Before changing anything it looks at the website, ads and tracking, finds the one thing costing enquiries and fixes that first. The plan is agreed up front (what, who, by when, and what it should change), then the work is done and shown, with technical fixes for speed, indexing and site structure handled inside its SEO work.
Measurement is where it differs from most audit providers. Work starts with a 30-day Revenue Baseline ($3,499): GA4 key events with real conversion values, call and form attribution, and CRM stitching so a closed deal traces back to the search that started it. If it cannot show what organic search is worth within those 30 days, you do not pay for that phase. Ongoing technical SEO, content and link building then sit in the $4,500 a month Growth retainer.
Its published proof shows what happens after the review. For Be Cool Refrigeration, a London commercial refrigeration and HVAC firm, it built fault-code guides and London commercial service pages. SEO Engico's published figures show UK organic clicks per quarter up 127%, from 4,007 to 9,091, and average UK position from 24.6 to 12.1 (Search Console, August to October 2025 against 30 April to 29 July 2026).
What stands out
- Finds the one problem costing enquiries and fixes it first, rather than handing over a list
- Website, ads, SEO and links in one team, so fixes do not wait on another supplier
- Client portal where you read reports, approve work before it goes live and message the team
- Says on the first call if your budget or market cannot realistically compete yet
Worth knowing
- There is no fixed-price audit product. The review leads into the baseline and retainer, so if you only want a report for your own developers, Assertive Media or Found will suit you better.
- It makes no ranking guarantees. It says technical and on-page fixes usually move something in four to eight weeks, with bigger gains taking three to six months.
See SEO Engico's SEO service and pricing
No. 2
2. Assertive Media
- Best for
- Buyers who want a one-off audit with a published UK price list
- Based in
- London, UK
- Founded
- 2007
Assertive Media is a founder-led London SEO agency, established in 2007, that sells audits as one-time purchases and runs a dedicated audit sub-brand it launched in 2020. The range is unusually specific: traffic and ranking recovery audits, technical audits that reach into server-side and client-side rendering, page indexing audits, link audits, manual action and spam audits, CMS and domain migration audits, and an all-in-one audit that combines them. It also runs sector audits for iGaming, finance and law firms.
It says every audit is done manually from scratch rather than from tool exports, and it does not offer free audits. Most are delivered within three to four weeks as Google Slides with supporting sheets, with updates along the way and ad hoc consulting available afterwards.
What stands out
- Published prices: technical audits at £2,000 to £3,000, recovery audits at £3,500
- Separate audit types for traffic drops, indexing, penalties and migrations
- Updates over email, Slack or Teams, across time zones
Worth knowing
- The deliverable is a deck and supporting sheets, so plan for your developers or another agency to make the changes unless you buy follow-on consulting.
- Its all-in-one audit starts at £5,000, so smaller sites may get more from a single technical audit.
No. 3
3. 1Digital Agency
- Best for
- Ecommerce brands that want an hours-based audit with a free preview first
- Based in
- Miami, Florida, US
- Founded
- 2012
1Digital is an ecommerce agency, born in Philadelphia and now headquartered in Miami, that runs SEO audits on two tracks. The free preview is automated tooling output across crawl, indexation, Core Web Vitals, schema and AI visibility, plus a 30-minute screen-share with a senior strategist. The paid audit works through six fixed sections: crawl, indexation, page speed at the 75th percentile, content and cannibalisation, links and internal authority, and whether AI tools can read the site and name you.
Findings are sorted by severity and then effort into a 30/60/90-day roadmap, delivered as a PDF, a tracking spreadsheet, a walkthrough call with the strategist and a backlog formatted for your team or its own.
What stands out
- Published rate of $185 an hour, with packages sized from about 40 hours to more than 100
- Most audits land in two to four weeks, with a one-week express option for narrower scopes
- Every page crawled rather than a sample, with each issue explained in plain language
Worth knowing
- The method is built around ecommerce, so service businesses and publishers should ask how much of it applies to them.
- The free preview is mostly automated output. The manual depth is in the paid audit.
No. 4
4. Victorious
- Best for
- US teams that want a sequenced fix plan with an owner and effort for each item
- Based in
- San Francisco, California, US
Victorious is a search-only agency that sells its SEO audit as the entry point to wider SEO and AEO work. The audit covers technical SEO, on-page issues, content gaps, keyword and prompt research, the link profile, readiness for a site migration, and whether your pages are structured to earn citations in AI Overviews and other answer engines.
The useful detail is in how the plan is built. Victorious says recommendations are grounded in the realities of your CMS, ranked by effort and outcome, and handed over as a sequenced plan with clear ownership and effort estimates for every fix. It offers implementation support on platforms such as WordPress and Shopify, and an enterprise version of the audit for larger sites.
What stands out
- Findings ranked by effort and outcome, with an owner named for each fix
- Covers AI search visibility alongside traditional rankings
- Implementation support available for WordPress and Shopify sites
Worth knowing
- No audit price is published, and the booking form asks about revenue, funding and SEO budget, so it is aimed at established and funded businesses.
- The audit is designed to shape an ongoing SEO strategy, so expect a proposal for further work afterwards.
No. 5
5. Found
- Best for
- UK brands that want technical, content and backlink audits with help to fix
- Based in
- London, UK
Found is a London digital marketing agency whose SEO auditing service is built from three separate audits. The technical audit looks for issues holding back performance, with recommendations prioritised for short, medium and long-term impact. The on-site content audit checks the targeting and quality of existing pages against what your audience searches for. The backlink audit reviews incoming links for risk and opportunity, and can feed a digital PR plan.
It pitches the service as a way to get senior SEO expertise at a fraction of the cost of a full team, and says the recommendations can be implemented by your in-house team or in partnership with Found.
What stands out
- Three audit types you can buy separately or together
- Technical recommendations ranked across short, medium and long term
- Can work alongside an in-house team on implementation
Worth knowing
- Pricing is not published, so expect a scoping conversation.
- Digital PR built on the backlink audit is a separate service and cost.
No. 6
6. TopHatRank
- Best for
- Sites hit by a penalty or sudden drop that need a forensic audit and recovery plan
- Based in
- California, Texas and Florida, US
TopHatRank is a US agency, with people in California, Texas and Florida, that sells four distinct audits. Its 'Deep Tissue' audit covers technical, structural and content issues across your main site and any secondary properties. The migration audit reviews content, infrastructure, platform and design before a move, then sets out action items on redirects, keyword mapping, crawl errors and change of address steps. The forensic audit investigates algorithm hits and manual penalties, with help on clean-ups and reconsideration requests if you want it. The competitive audit picks apart what rivals do well and what to avoid copying.
Deliverables are written to skip jargon and long write-ups, and every client works with a dedicated SEO lead.
What stands out
- Forensic audit for penalty and algorithm recovery, with optional clean-up support
- Separate migration audit with redirect and change of address guidance
- A dedicated SEO lead on every audit
Worth knowing
- No prices are published. Every audit is quoted on request.
- Its page gives fewer process specifics than some on this list, so ask for a sample deliverable before you commit.
No. 7
7. Totally Digital
- Best for
- B2B, education and finance sites that want a fix list developers can work from
- Based in
- London, UK
Totally Digital is a London agency whose technical SEO service starts with an audit and ends with each fix checked after release. It works mostly with B2B brands, education providers, financial services and membership organisations. The audit sorts the work into fixes that need little developer time, structural issues that need developers, content gaps and pages competing for the same searches, and structured data that could earn richer results.
The fix list is ranked by how many important pages each fix affects, so developers start where it counts. If you have a capable development team, it hands over the list and checks each release. If you do not, it makes the changes itself. Crawler access for AI tools, in robots.txt and at the server or CDN, is part of the same work.
What stands out
- Fix list ranked by the number of important pages each fix affects
- Checks every release after your developers ship
- Makes the changes directly if you have no developer
Worth knowing
- Pricing is not published.
- The audit is the first stage of its technical SEO service rather than a standalone product, so follow-on work will be part of the conversation.
How to choose an SEO audit service
Start with the problem you are trying to solve. If traffic fell off a cliff, buy a recovery or forensic audit from someone who does them often. If you are about to replatform, buy a migration audit before the build is signed off, not after launch. If the site has never had a proper review, a full technical, content and link audit makes sense, but ask for a sample first so you know whether you will get a ranked plan or a spreadsheet of every warning a crawler produced.
Then decide who will make the changes. An audit handed to an overstretched developer can sit untouched for months, so if you have no spare development time, pick a provider that implements, or one that writes findings as tickets and checks each release. Price matters less than it looks: a few thousand spent on an audit that gets acted on is cheaper than a free one that does not. And be wary of any SEO audit that ends with a promise of rankings.
Questions to ask before you sign
- Can we see a sample audit, with the client details removed?
- How will you rank the findings, and how much developer time will the top fixes need?
- Which checks are manual, and which come straight from a tool?
- Who implements the fixes, and is that priced separately?
- How long will it take, and can we ask questions after delivery?
Frequently asked questions
What is included in an SEO audit?
A full SEO audit covers technical health (crawling, indexing, redirects, canonicals, speed and rendering), on-page content and keyword targeting, internal links and the backlink profile. Many now also check whether AI crawlers can reach the site and whether AI answers name you. The most valuable part is the priority order, with the fixes that affect your most important pages at the top.
How much do SEO audit services cost?
Expect anything from a few hundred to several thousand pounds or dollars, depending on site size, depth and whether implementation is included. On this list, Assertive Media publishes audit prices from £2,000 and 1Digital publishes an hourly rate with packages sized by hours. Most others quote after a scoping call. SEO Engico does not sell a standalone audit; its review leads into a paid baseline and SEO retainer.
How long does an SEO audit take?
Most professional audits take one to four weeks. 1Digital quotes two to four weeks for most paid audits with a one-week express option, and Assertive Media says most of its audits are delivered within three to four weeks. Very large or multi-region sites take longer, because crawling and checking templates at scale takes time.
Is a free SEO audit worth having?
A free audit is usually automated tool output. It can flag obvious errors, but it rarely explains why a page lost rankings or what to fix first. 1Digital's free preview, for example, is tooling output plus a short call with a strategist. Treat a free audit as a sales conversation and a paid audit as the diagnosis.
How often should a website have an SEO audit?
A full audit once a year suits most sites, with a focused check before and after any redesign, replatform or domain change, and straight away after an unexplained traffic drop. Large sites that ship changes every week get more from ongoing technical monitoring than from a single annual audit.
Our verdict
Pick SEO Engico if you want the audit to lead straight into fixes, with results reported against calls, enquiries and revenue rather than a health score. If you only need a one-off diagnosis to hand to your own team, Assertive Media has the clearest published UK prices and the widest choice of audit types. Choose 1Digital for ecommerce, Victorious for a sequenced US-style plan, TopHatRank after a penalty or sudden drop, and Found or Totally Digital if you are a UK business that wants help implementing.
Book a call about SEO Engico's SEO service
