Best Ecommerce SEO Agencies in the UK (2026): 10 Checked

Search still sells products in the UK. Online sales were 27.3% of all UK retail in August 2026 (ONS series J4MC), and Ofcom found that about 30% of UK searches now show an AI Overview (Ofcom Online Nation 2025). An ecommerce SEO agency’s job is to get your category and product pages into both.

Search Google UK for “ecommerce seo agency uk” and many of the top results are lists of agencies. We opened seven of them on 21 October 2026. One blocked us, one no longer exists (it returns HTTP 410) and one had no list, so we read the archived copy of the missing one and five in total. All four lists written by agencies put their own firm in first place.Between them the five named 60 agencies, and only 7 appeared on more than one list. Google’s AI Overview for the same search quoted a price of “£750 to £3,000+” a month; the only page we found with that range was one of those self-ranking lists, which gives no source for it.

So this guide starts from each agency’s own website. For every firm we noted where it is based, which platforms it names, what its ecommerce SEO page actually covers, one result it publishes for an ecommerce client, and any price it prints. Every fact is dated and linked.

A note on who wrote this. FactoryJet builds online stores and runs ecommerce SEO for UK stores, so we are on this list, in the last group. Listing yourself is common on pages like this; it is a good reason to read every list, ours included, with care. This list shares no firm with our list of the best SEO agencies in the UK apart from us: that one covers every kind of business, this one only online stores.

A few terms first. Category pages (also called collection or PLP pages) list products of one type, like “women’s trainers”. Faceted navigation is the set of filters on those pages. A migration is moving the store to a new platform, domain or URL structure. Product schema is code that tells Google a product’s price, stock and reviews. Google Merchant Center is where you send product data so items can appear in Google’s shopping results. GEO (generative engine optimisation) means work aimed at AI answers such as ChatGPT and Google AI Overviews.

The UK ecommerce SEO agencies at a glance

Scan this first. Find the rows that match your platform and size, then read those profiles in full.

How we built this list

1. Start from the search results. We pulled Google UK results and the “People also ask” questions for 16 ecommerce SEO searches on 21 October 2026, including “ecommerce seo agency uk”, “shopify seo agency”, “magento seo agency” and “ecommerce seo cost uk”.
2. Read the lists that rank. We counted which agencies each list names and where each publisher put itself.
3. Check each agency on its own site. We checked 19 agencies’ ecommerce SEO, about, contact and pricing pages on 21 October 2026. Every description below comes from those pages and links to them.
4. Keep only ecommerce work. A firm made the main list if its own site shows an ecommerce SEO service and named ecommerce clients. The firms we checked but did not profile are listed further down, with the reason.
5. No scores we cannot prove. We have not hired these firms, so there are no star ratings or rankings. We say who each one suits and give one question worth asking it.
6. Prices only from the firm. Where a firm prints a price, a minimum or a budget band, we copy it exactly and link the page. We never guess another company’s price.

What each agency’s ecommerce SEO page covers

Five jobs separate ecommerce SEO from ordinary SEO: controlling filter pages, moving platforms safely, product schema, Merchant Center product data and visibility in AI answers. This table shows which of the five each firm names on its own ecommerce SEO pages. “Not named” means we did not find it on the pages we read, not that the firm cannot do it, so ask.

Three of the ten outside agencies name all five: Eastside Co, Edge45 and Seed. Polaris names four and sells migrations as a separate service. Eight name AI search on their own pages, but only four name faceted navigation, the job that most often wastes a large store’s crawl budget.

Which agencies know Magento, Adobe Commerce and other large platforms?

Magento (now Adobe Commerce) and Salesforce Commerce Cloud stores tend to be bigger and more custom, so SEO fixes often need a developer. One of these two is a Magento build agency with SEO; the other is an SEO agency with deep Adobe Commerce and Salesforce pages.

Envisage Digital

Based: Bournemouth (Space House, Oxford Road). Type: Developer-led Magento and Adobe Commerce agency with in-house SEO.

Envisage builds Magento stores and runs SEO on them. It lists itself as a Hyvä Gold Partner and an Adobe Solution Partner (Hyvä is a faster front end for Magento). The Magento SEO page covers speed, crawling, indexing, structured data and product and category pages, and names AI Overviews and GEO. Its case studies include a UK domain change with redirects and hreflang across every Magento store view. The SEO team is small: the page says three in-house SEO specialists.

• Best for: A Magento or Adobe Commerce store, especially a trade or B2B one, that needs SEO fixes done in the code.
• Platforms named: Magento, Adobe Commerce, Hyvä, Shopify, BigCommerce, WooCommerce and Laravel
• Ecommerce clients named on its site: Specialist Crafts, Flooring Hut, FootActive, Snowbee, Cladco, Poles and Blinds, Surplus Store
• Price: No SEO price published. The enquiry form, which covers builds and SEO together, offers bands from "Under £5,000" to "£100,000+".
• Worth asking them: Whether the three SEO specialists or the developers own your redirect map during a rebuild, and what organic traffic did after the Specialist Crafts domain change.

Source, read 21 October 2026: www.envisagedigital.co.uk/magento-services/magento-seo-services/

Polaris Agency

Based: Chalfont Park, Gerrards Cross, Buckinghamshire (listed on its site as its London office); its site also links Polaris Ireland and Polaris USA. Type: SEO and GEO agency with a detailed ecommerce practice.

Polaris has the most detailed ecommerce SEO page of any firm here. It names category page (PLP) and product page (PDP) work, Google Merchant Center and organic Shopping listings, product schema and feed quality, and faceted navigation and crawl traps on Adobe Commerce. It also checks that product content and category links can be read without relying on JavaScript in the browser, which matters for AI crawlers. It scores category pages with its own 66-point checklist, which it calls the Kartessien Index.

• Best for: A larger retailer on Adobe Commerce or Salesforce Commerce Cloud with a big catalogue and many filters.
• Platforms named: Shopify and Shopify Plus, Salesforce Commerce Cloud, Adobe Commerce, BigCommerce and WooCommerce
• Ecommerce clients named on its site: Dune London, Hampers.com, Paradox London, Virginia Hayward, Blitzsport
• A result it publishes: Dune London: "644% Increase in sales". The site says the Dune work won Best SEO Campaign at the 2025 European Search Awards.
• Price: Published: "SME campaigns range from £3,000 - £5,000 per month", "£6,500 - £10,000 per month" for the tier it describes for challenger ecommerce brands, "£12,500 - £19,500 per month" for enterprise, and projects "starting from £5,450 + VAT".
• Worth asking them: Which pricing tier your catalogue size falls into, and whether the person who scores your category pages also writes the fixes.

Source, read 21 October 2026: www.polarisagency.com/seo/ecommerce-seo/

Other agencies we checked

These firms came up in the search results or in other lists. We read their sites on the same day and kept the notes here so you can see what was checked, not only what made the cut.

How much does an ecommerce SEO agency cost in the UK?

Usually £1,500 to £10,000 or more a month, depending on catalogue size and competition. Two UK pricing guides we read on 21 October 2026 give ecommerce-specific ranges: Ren Hao SEO puts ecommerce work at “£1,500–£8,000+/mo”, and Gorilla Marketing says monthly budgets “range from £2,000 for smaller stores to £10,000+ for competitive retail brands”. Whitehat SEO’s UK pricing guide (updated 29 July 2026) adds that competitive sectors, ecommerce among them, carry 30 to 50% pricing premiums, and that a large legacy catalogue can need £5,000 to £15,000 of upfront fixes first.

Here is what the agencies themselves print, copied exactly:

The other firms publish no SEO price. Glass Digital and StudioHawk UK both say a minimum applies without giving the figure. For the full picture by business type, including audits, day rates and VAT, see our guide to SEO cost in the UK.

What an ecommerce SEO engagement should cover

Use this as a checklist when you compare proposals. Each item links to Google’s own documentation, read on 21 October 2026.

Category and product pages

Category pages usually target the biggest buying searches (“oak dining tables”), and product pages the long, specific ones (“6 seater extending oak table”). Expect keyword mapping so two pages do not compete for one search, copy above or below the product grid, internal links between related categories, and unique product descriptions in place of the manufacturer’s text. Ask which pages the agency would fix first and why.

Faceted navigation and crawl control

Filters build new web addresses for every combination of size, colour and price. Google’s faceted navigation guide(updated 18 December 2025) says these can create infinite URL spaces and lead to overcrawling. It gives two routes: block filter pages from being crawled if they do not need to rank, or follow its rules for the ones that should. A good agency crawls your store first, because there are always more filter pages than the owner expects, and keeps the filters people actually search for (“black leather sofa”) open to Google.

Migrations without losing rankings

Moving from WooCommerce or Magento to Shopify is where stores lose the most organic revenue in one go. Google’s site move guide (updated 20 August 2026) recommends permanent server redirects such as 301 and 308, says they do not lose PageRank, and advises against redirect chains. The work is a full map of old to new addresses, tested before launch, then weeks of Search Console checks. We wrote a longer guide on replatforming without losing SEO, and if the move is to Shopify, see our UK Shopify migration service.

Product schema

Google’s product structured data guide splits it in two: product snippets for pages where people cannot buy (reviews, comparisons), and merchant listings for pages where they can. Merchant listing markup can carry sizing, shipping and returns details. On a store, that means merchant listing markup on every product page, with price and stock that match what the page shows.

Google Merchant Center and free listings

Products can appear in Google’s shopping results without paying for ads. Google’s free listings help page says eligible products may show on Search, Images, Lens, YouTube, Gemini, the Shopping tab and Business Profiles. It also says turning the setting on gives permission to show products but does not guarantee they will appear, and that matching depends on the data you send. Feed quality is SEO work now, and five of the ten outside agencies above name it.

AI Overviews for product searches

Google’s guide to AI featuressays there are “no additional requirements” to appear in AI Overviews or AI Mode beyond normal SEO. Ofcom found about 30% of UK searches show an AI Overview. For a store, the same groundwork helps in both: accurate product data, category copy that answers buying questions (“which oak table seats eight?”), and your brand named on sites you do not own. Ask an agency how it measures AI referrals in GA4, not only rankings.

How to choose an ecommerce SEO agency in the UK

Start with your platform, because SEO fixes on Shopify, Magento and WooCommerce are made in different places. Then check proof: one published result on a store like yours, with revenue or organic traffic, not only rankings. Google’s own advice on hiring an SEO (updated 5 June 2026) is to ask for examples of past work and how results will be explained, to give Search Console read access only at first, and to walk away from anyone who guarantees first place.

Add four ecommerce questions. Who changes the code on our store? What will you do about our filter pages? How do you measure organic revenue in GA4? What is the notice period? The answer to the first one matters most: an SEO plan that waits months for a developer earns nothing in the meantime.

If you run a Shopify store and are choosing a build partner as well, our list of Shopify Plus agencies for UK brands covers 15 firms by buyer type, and our Shopify SEO service sets out the Shopify-specific fixes.

Sources

All read on 21 October 2026: each agency’s own pages, linked in its profile and in the tables above; ONS internet sales as a share of retail, series J4MC (August 2026 value); Ofcom Online Nation 2025; Google Search Central on faceted navigation, site moves, product structured data, AI features and hiring an SEO; Google Merchant Center free listings; and the price guides from Ren Hao SEO, Gorilla Marketing and Whitehat SEO. The lists we tallied were published by 6S Marketers, 5MS, Charle, ClickSlice (archived copy, 11 May 2026) and RevenueBase.