Best ecommerce SEO companies in the UK

How this list was put together, and its limits

The starting pool came from a competitor’s published list of ecommerce SEO agencies. That is a legitimate place to start, because those are the pages currently winning the terms, but it is only a starting point, so every company here was then read from its own website on 6 August 2026, and what appears below is what each one says about itself on that date.

Being explicit about why that step matters: the list we drew the pool from contains claims about a named agency’s location and founding year that the agency’s own site contradicts. Copying a competitor’s research would have meant republishing someone else’s errors under our name.

Two honest limits. We have not audited anyone’s work or spoken to their clients, so nothing here is an assessment of what any of them actually delivers. And one company in the original pool, Blue Array, is absent because their site would not serve us a page to read on the day, and we would rather leave a name out than write it up unverified.

A third limit, on the word “best”. There is no single best ecommerce SEO agency, and a list that claims to have found one is ranking on something it has not measured. What a list can honestly do is narrow the field to firms whose stated focus matches the work you need, and leave the choosing to the person who knows the brief.

The order is by fit for the reader described at the top, not by revenue, headcount or awards. Concretely it ranks one thing: how directly the people diagnosing your search problem are able to implement the fix, which we have judged from each company’s own stated structure. That is a rough proxy and worth treating as one, and it deliberately favours teams that also build. If your brief is search and nothing else, a pure specialist is the better call and their entry says so.

The six

What an ecommerce SEO company actually does

The mechanics of search are the same everywhere. The surfaces are not, and that is the whole reason ecommerce SEO is treated as its own discipline rather than general SEO pointed at a shop.

A brochure site has a few dozen pages a human wrote. A store has collection pages that generate themselves, product templates that have to work across thousands of URLs, faceted navigation that can spawn near-infinite crawl paths from a handful of filters, and a constant churn of products going out of stock or being discontinued. Most of the real work sits there: deciding which of those generated URLs should exist at all, which should be indexable, and what happens to a page when the thing it sells stops existing.

On top of that sit the parts that look like normal SEO and are not quite. Product schema and rich results, which are the difference between a listing with a price and star rating and one without. Site speed on templates that carry a lot of imagery. Internal linking that has to be generated rather than hand-written. And the reality that your highest-value pages are commercial, so the content brief is not "write an article", it is "make this collection page answer the query properly". Ours is ecommerce SEO, and the Shopify-specific version is Shopify SEO.

What actually separates them

Less than the positioning suggests. Every company here can do technical audits, content and link acquisition, and every one has case studies with impressive percentages, because case studies are chosen by the agency. The real split is structural: specialists go deeper on search and hand you recommendations, while platform and full-service agencies go less deep but can implement what they find.

That distinction decides more than it looks like it should. A technical SEO audit is worth nothing until somebody changes the theme, and on ecommerce sites a surprising share of the findings are build problems wearing search clothing: collection pages that generate thousands of crawlable filter URLs, product templates that ship the same meta description a thousand times, or a JavaScript storefront that renders nothing for a crawler.

So the question worth asking any of us is simply: when you find something, who fixes it, and are they on your team or ours?

How to choose between them

If search is your only problem and your build is healthy, a specialist is usually the right answer. If your rankings are being held back by the storefront itself, an agency that can change the storefront will get further. If you need several channels moving together, the larger performance agencies on this list are built for exactly that and we are not.

We wrote a longer version of the questions worth asking in how to choose a Shopify agency, and the case for the bigger firms as fairly as we could manage in boutique versus big agencies.

What ecommerce SEO costs, and how long it takes

Retainers rather than projects, in almost every case, because search is not a thing you finish. In the UK, meaningful ongoing work on an ecommerce catalogue generally starts in the high hundreds a month and runs into several thousand, and the spread is wide because the word covers a monthly report and a team rebuilding your category architecture equally.

What moves the number is catalogue size, how much of the fix is development rather than content, and whether anyone on your side can implement. That last one is the hidden cost in a lot of engagements: a specialist produces a recommendation, nobody can ship it, and you pay for advice that stays in a document. Ask what happens to a recommendation after it is written, and who writes the code.

On time, the honest range is months, and it depends on your existing authority, your category, and whether the constraint is technical or content. Technical fixes can show up within weeks, because you are removing an obstacle in front of pages Google already knows about. Building authority in a competitive category is a year of work and sometimes more. Anyone quoting a specific timeline before looking at your site is telling you what you want to hear.

Technical, content or authority: which one is actually broken

Three very different problems get sold under one word, and buying the wrong one is the most common way ecommerce SEO money gets wasted.

Technical is when Google cannot crawl, render or index your pages properly, or when your own site competes with itself through duplicate and faceted URLs. It is the cheapest to fix and the fastest to show a result, because the demand already exists and something is in the way. Content is when the pages exist and are crawlable but do not answer the query as well as the ones above them. Authority is when your pages are good and still lose, because the domains beating you have earned more trust. That is the slowest and least controllable of the three, and it is where digital PR and genuine link earning come in.

Any company on this page can tell you which of the three you have. The tell of a good answer is that it is specific and it rules things out. Authority is the one where the larger names here are ahead of us, which their entries above say plainly.

In-house, specialist or full-service

The answer depends on where your constraint sits rather than on which is better in the abstract.

A specialist goes deepest and is the right call when search is the whole brief and you have development resource to implement. A full-service or platform agency is better when the fix runs through the build itself, because a recommendation nobody can ship is worth nothing. In-house is the strongest long-term once you have the volume to justify a full-time hire, with the caveat that one person cannot cover technical, content and digital PR at depth, so most in-house setups end up buying one of those anyway.

Ask any company here who writes the code. It separates the ones who hand you a document from the ones who ship the change, and it is the single most useful question on this page.

How to measure the work, and what to be suspicious of

Rankings are the metric everyone reports and the one that matters least. They are personalised, they vary by location and device, and a chart of them going up is entirely compatible with revenue going nowhere.

The numbers worth holding a provider to sit further down the chain: organic sessions to commercial pages rather than to the blog, organic revenue and its share of the total, and how many pages earn any impressions at all, which is the honest health check on a large catalogue. Search Console is the source for most of that, and it is your account rather than theirs. Insist on access from day one.

Two things to be suspicious of. A report with no losses in it, because real search work has some. And any claim you cannot check yourself, which is the reason our receipts page exists: the technical performance claims we make can be re-run against a live URL by anyone who wants to.

AI search, GEO and what actually changed

A real shift, and one where nobody on this page has years of track record, us included. AI Overviews, ChatGPT and Perplexity increasingly answer the query on the results page, which changes what a ranking is worth: you can hold position three and lose the click to a summary above you.

What appears to matter is being the source a model quotes rather than the page a user clicks. That rewards content answering a question cleanly and directly, structured data a machine can parse without guessing, and being cited in places models already trust. Much of it overlaps with good conventional SEO, which is the reassuring part.

Be careful with anyone selling certainty here. The measurement is immature, attribution is genuinely hard, and a provider claiming a proven AI-search methodology is claiming more than the data currently supports. Ours is AI search and GEO, with the longer version on GEO agencies.

Replatforming without losing what you have earned

The highest-stakes search event most stores go through, and the one where the damage stays invisible until it is indexed.

Search visibility lives on URLs. Change them without mapping the old ones onto the new, and the authority those pages accumulated stays with the old platform. It is recoverable, slowly and expensively, and it is entirely avoidable with redirect mapping done before launch rather than after. The same applies to product data, canonical structure, and any page that quietly changes template on the way across.

If a replatform is anywhere in your next year, ask every company on this page what they do about it specifically. We keep SEO migrations as a service in its own right, separate from the migration itself, because they are different jobs and the second does not come free with the first.