Top 10 Ecommerce SEO Agencies in the UK: A Curated Guide

Ecommerce SEO is no longer just about ranking a category page in ten blue links. Shoppers now find products through Google Shopping, AI Overviews and AI Mode, ChatGPT, Gemini, Perplexity, social platforms and marketplace search, yet traditional SEO has not gone away: Google says its generative features still rely on its core ranking and quality systems, so pages must be crawlable, indexed and useful before they can be cited. The job has widened, covering technical SEO, collection and product pages, architecture, structured data, feeds, content, digital PR, migrations, conversion and AI search visibility.

This guide compares ten UK agencies with evidence of ecommerce search work, checked on 1 October 2026 for ecommerce results, platform expertise, AI search capability, pricing and independent reviews. Of the ten, nine offer a dedicated AI search or GEO service, and only two, Why Matters and ClickSlice, publish a monthly starting price. A note on our own position: Why Matters is a Shopify agency selling SEO, so we appear first and labelled as our agency, and this is not an independent ranking; the other nine follow in alphabetical order, judged on the same criteria from their own sites and Clutch, so check details before you shortlist.

Key Takeaways

• Judge ecommerce SEO on organic revenue and commercially valuable visibility, not rankings alone.
• Google says its SEO best practices still apply to AI Overviews and AI Mode, with no separate technical shortcut, so crawlability, indexation and useful content still come first.
• Nine of the ten agencies offer dedicated AI search or GEO work, but only Why Matters (from £1,500 a month) and ClickSlice (from £2,500) publish a monthly price; Re:signal publishes a £10,000 AI audit.
• Of 265 Shopify stores we have audited, 196 were still on legacy themes, and 75 of the 80 stores we have migrated arrived without a redirect map, two problems that quietly cost rankings.
• A useful audit prioritises fixes by commercial impact; Why Matters' free Shopify SEO audit arrives as a written report within three to five working days, followed by a call.
• Before hiring, ask how an agency reports revenue, non brand visibility and AI citations, who implements fixes, who owns the content and how long the contract runs.

Quick Answer

A strong UK ecommerce SEO agency understands large catalogue technical problems, collection and product page optimisation, content, digital PR, migrations and AI search visibility. For Shopify brands that want SEO, AI search and the development needed to implement fixes under one roof, with a published price, Why Matters is built for that. NOVOS and Re:signal are ecommerce specialists for larger brands, Impression connects SEO with paid media and PR, Blue Array and StudioHawk are organic search specialists, Found and The SEO Works blend SEO with AI discovery, Propeller pairs SEO with Shopify builds, and ClickSlice publishes entry pricing.

Table of Contents

• How We Selected These Ecommerce SEO Agencies
• Quick Comparison
• Why Matters (our agency)
• Blue Array
• ClickSlice
• Found
• Impression
• NOVOS
• Propeller
• Re:signal
• StudioHawk
• The SEO Works
• What Does an Ecommerce SEO Agency Do?
• How Much Does Ecommerce SEO Cost?
• Does SEO Still Work With AI Search?
• What Should You Ask Before You Hire?
• What Should an SEO Audit Include?
• Why Matters Perspective
• Frequently Asked Questions
• Final Thoughts
• Related Articles

How We Selected These Ecommerce SEO Agencies

We compared every agency, including our own, on five things: published ecommerce results, because online stores bring problems such as faceted navigation, variants, discontinued products, pagination, migrations and international stores; platform expertise across Shopify, Shopify Plus, Magento, WooCommerce and headless, which matters when recommendations need developers; AI search work, weighting measurable AI Overview, LLM citation and visibility reporting above a renamed service page; pricing transparency, from monthly prices and audit fees to verified project minimums; and independent reviews such as Clutch.

Quick Comparison

Why Matters (our agency)

Location: Brighton. Specialism: Shopify SEO, ecommerce growth and AI search. AI search: dedicated AI SEO service. Published price: SEO retainer from £1,500 a month; free SEO audit. Website: Why Matters Shopify SEO agency.

Why Matters is a Shopify agency rather than a general SEO company, which changes how SEO gets done: if a collection template, schema or theme script needs fixing, our own developers fix it instead of leaving a ticket in a spreadsheet for someone else. Our Shopify SEO covers technical SEO, keyword research, collections, product pages, content, internal linking, Core Web Vitals, structured data and digital PR, and our AI SEO service adds AI visibility audits, citation monitoring, content built around buying questions, product data optimisation, brand mentions and reporting on AI referrals and sales.

Our audits show why implementation matters: of 265 Shopify stores we have audited, 196 were still on legacy themes, and 75 of the 80 stores we have migrated arrived without a redirect map, both problems an SEO report alone will not fix. We publish our prices, with a dedicated SEO retainer from £1,500 a month, and our free Shopify SEO audit covers technical, on page and off page SEO in a written, prioritised report within three to five working days, followed by a call about what to fix first.

Best for: Shopify brands wanting SEO, AI search work and the development to implement it under one roof.

Blue Array

Location: Reading and London, with an international office. Specialism: organic search, GEO and digital PR. AI search: dedicated Generative Engine Optimisation service. Published price: not published; Clutch lists a $5,000+ minimum project. Website: Blue Array website.

Blue Array is almost entirely focused on organic search, covering SEO, GEO, digital PR, content, international SEO, CRO and short form organic video, with ecommerce work for Superdry, Seraphine, Boden and Crew Clothing. Its Ocushield case study reports a 64% year on year rise in visibility and 56% more non brand clicks to transactional pages, and it starts new clients with a fixed price Sprint Zero to forecast opportunity before a retainer.

Best for: ecommerce brands wanting a specialist organic search agency rather than full service marketing.

ClickSlice

Location: London. Specialism: ecommerce and Shopify SEO. AI search: ecommerce AI marketing and GEO audit services. Published price: from £2,500 a month. Website: ClickSlice website.

ClickSlice positions itself heavily around ecommerce across Shopify, WordPress, Magento and custom platforms, reporting a 69% rise in organic revenue for Humax and large traffic gains for e bike, pet and men's grooming stores. Its GEO audits cover AI citations, mentions, entity recognition, trust signals and structured data across ChatGPT, Gemini, Perplexity, Copilot and Google's AI results, and it is one of only two agencies here publishing a monthly starting price.

Best for: DTC brands wanting an SEO heavy agency with transparent entry pricing.

Found

Location: London. Specialism: ecommerce SEO, paid media and AI driven search. AI search: dedicated AI SEO service and Everysearch approach. Published price: bespoke. Website: Found website.

Found calls itself an AI first Everysearch agency, and its ecommerce SEO covers technical work, product and category optimisation, content, authority building, digital PR and AI search, tracking where brands are surfaced and cited across AI discovery as well as Google. Its Bonmarché work reports a 25% rise in conversions and £778,000 of incremental revenue.

Best for: retailers wanting SEO connected to AI, social and product discovery, not just the classic SERP.

Impression

Location: Nottingham, London and Manchester. Specialism: performance marketing, ecommerce SEO, digital PR and experimentation. AI search: dedicated GEO work. Published price: not published; Clutch says retained services start at $5,000 a month. Website: Impression website.

Impression runs SEO alongside digital PR, paid media, strategy and conversion, with retail clients including Queensmith, Alloy Wheels Direct, Abigail Ahern and Rutland Cycling; its Alloy Wheels Direct migration reports 50% more clicks and 53% more page one keywords. It also publishes real AI search results: its Tensar GEO work reports 1,793 AI Overview citations and 47,604 organic clicks across AI Overview keywords after 12 months.

Best for: mid market and larger retailers wanting SEO alongside paid media, PR and testing.

NOVOS

Location: London. Specialism: ecommerce SEO, AEO, digital PR and migrations. AI search: dedicated AI visibility and AEO service. Published price: not published; Clutch lists a $5,000+ minimum project. Website: NOVOS website.

NOVOS is one of the clearest ecommerce specialists here, saying it has worked with more than 250 ecommerce brands, including Osprey, TALA, Not On The High Street, Bloom & Wild and Vitabiotics, and that over 70% of its clients use Shopify Plus. Its Osprey AI search case study reports a 72.6% share of AI answers across the category it measured, first place in six of nine topics, and its Swyft work reports a 239% revenue increase.

Best for: larger ecommerce brands wanting ecommerce only expertise, strong PR and mature AI measurement.

Propeller

Location: London. Specialism: ecommerce design, development and SEO. AI search: part of wider organic search work. Published price: bespoke; Clutch lists a $10,000+ minimum project. Website: Propeller website.

Propeller combines ecommerce development with search across Shopify, Shopify Plus and WordPress, covering audits, keywords, category and product optimisation, schema, internal links, Core Web Vitals, faceted navigation and migrations. Its Cleva Shopify work reports 29% more users and 19% more purchasers, and it says ecommerce clients often see ranking movement in three to six months, with stronger revenue effects over six to twelve.

Best for: brands building SEO into a redesign, Shopify project or migration.

Re:signal

Location: London and Manchester. Specialism: ecommerce organic growth, international SEO and digital PR. AI search: dedicated ecommerce GEO service. Published price: AI Discoverability Audit from £10,000. Website: Re:signal website.

Re:signal is a specialist ecommerce SEO agency with work for ASICS, Under Armour, Vivobarefoot, FatFace, OKA and Healthspan, reporting 20x organic revenue growth for ASICS. Its fixed AI Discoverability Audit, from £10,000 over two to three weeks, covers technical AI accessibility, retrieval testing, AI visibility benchmarks and a prioritised roadmap, and Clutch lists it as 80% ecommerce with a 4.9 rating.

Best for: established and international retailers needing technical, content, PR and AI search depth.

StudioHawk

Location: London, with international offices. Specialism: SEO only. AI search: dedicated AI SEO service. Published price: not published; Clutch lists a $1,000+ minimum project. Website: StudioHawk website.

StudioHawk began in Australia and now serves UK brands from London, focusing purely on technical, ecommerce and international SEO, content, links, PR and AI search. Its Damson Madder work reports 558% more clicks to product pages and 410% more to collections, and its London site publishes AI search results including a 931% rise in AI referral traffic.

Best for: retailers wanting a pure SEO specialist without PPC or wider marketing.

The SEO Works

Location: Sheffield, Leeds and London. Specialism: SEO, GEO and paid search. AI search: integrated SEO and GEO. Published price: packages published; ecommerce pricing tailored. Website: The SEO Works website.

The SEO Works has operated since 2009 and holds more than 50 Clutch reviews averaging about 4.8. Its ecommerce work includes a pet retailer growing from 20,000 to 200,000 users in 12 months and an AI search project reporting 78% revenue growth from ChatGPT referrals, and it now structures information for people, search indexes and AI retrieval together.

Best for: established SMEs and mid market retailers wanting a large UK search team with GEO.

What Does an Ecommerce SEO Agency Do?

Ecommerce SEO is not just blog posts. A good programme works on several parts of the store at once:

• Technical SEO: making sure the right pages are crawled, rendered and indexed, and fixing duplicate URLs, faceted navigation, parameters, canonicals, pagination, redirects, JavaScript rendering and slow templates, which multiply across large catalogues.
• Category and collection pages: often more valuable than blogs, because someone searching men's waterproof hiking jackets is closer to buying; optimise architecture, titles, headings, filters, internal links and copy without writing essays.
• Product pages: unique descriptions, product and review schema, images, variants, availability, Merchant Centre data and a plan for discontinued products, plus a page that converts once it ranks.
• Content: buying guides, comparisons, sizing and care advice and expert answers that reach shoppers earlier and give search and AI systems more to cite.
• Digital PR and links: independent mentions and links that build authority.
• AI search measurement: citations, mentions, prompt visibility and AI referrals, tied back to whether the right customers visit and buy.

How Much Does Ecommerce SEO Cost?

There is no standard UK tariff, and published prices show how wide the range is: Why Matters' SEO retainer starts at £1,500 a month and ClickSlice's search marketing at £2,500, Re:signal's AI audit costs from £10,000 with ongoing work quoted from its roadmap, and Clutch shows minimums of $5,000 for NOVOS and Blue Array, retainers from $5,000 a month for Impression, $10,000 for Propeller and $1,000 for StudioHawk. These are not like for like, because one £2,500 campaign may include technical work, content and links while another agency charges for each separately.

Cost depends on catalogue size, technical complexity, competition, markets, content, PR, development, AI reporting and migrations, so a 50 product UK Shopify brand needs far less than a retailer with 500,000 URLs. Ask how much senior time sits on the account and whether content, development, PR, links and AI tracking are included.

Does SEO Still Work With AI Search?

Yes, though SEO now covers more ground. Google's 2026 AI optimisation guidance says its SEO best practices remain relevant because AI Overviews and AI Mode are rooted in its core ranking and quality systems, retrieving relevant pages from its index, and its AI features documentation says there are no additional technical requirements: a page must be crawlable, indexed and eligible for a snippet. Google recommends valuable, unique, people first content with useful shopping information, images and video, so the job is not writing for a bot but making product and brand information clearer, more useful and more distinctive.

Other assistants such as ChatGPT use different systems and sources, so there is no universal way to rank first in every AI tool, which makes monitoring important: track real buying questions such as which dog food is best for sensitive stomachs, and record whether you appear, which competitors do and which sources are cited. Reports then combine Google rankings, AI citations and AI referral traffic rather than rankings alone; our guide to writing Shopify blogs that rank on Google and get cited by AI covers the content side.

What Should You Ask Before You Hire?

Ask every shortlisted agency the same questions:

• Can you show ecommerce results? Case studies in organic revenue, transactions, non brand traffic and category growth, not rankings alone.
• Do you know our platform? On Shopify, ask about collections, variants, canonicals, tag pages, theme speed and Markets.
• Who implements technical fixes? A 150 ticket audit is worthless if nobody builds it, so ask about developers, implementation and QA.
• How do you measure AI and commercial performance? Prompts, citations, mentions, competitors and AI referrals on named platforms, alongside revenue, conversion and Search Console data.
• Who writes the content and builds the links? Writers, fact checking and ownership, and whether links are editorial, relevant and approved rather than a guaranteed monthly quota.
• Who works on the account, and on what terms? The people doing the weekly work, senior time, minimum term, notice, setup fees and ownership of the work.
• What happens in the first 90 days? A specific sequence, such as audit and tracking, then technical fixes and collection priorities, then content and PR.

What Should an SEO Audit Include?

An audit should tell you what to do, not export 120 pages of crawler warnings. For an ecommerce store, it should review crawlability and indexation (robots.txt, sitemaps, canonicals, noindex and redirects), architecture and internal links, duplication from variants, filters and parameters, on page titles, headings and copy, structured data such as Product, Offer, AggregateRating and Breadcrumb, Core Web Vitals and app weight, content gaps, backlinks and competitor gaps, AI search visibility for buying questions, and real Analytics and Search Console data showing which issues already cost clicks and sales.

Our free Shopify SEO audit covers technical, on page and off page SEO. You send your store address and contact details and give us Google Search Console access, we deliver a written, prioritised report within three to five working days, then talk it through on a call, with no charge for either, and you can fix the issues yourself, pass them to your developer or ask us to implement them.

Why Matters Perspective

The biggest mistake in ecommerce SEO is separating the ranking from the store. Moving a category from eighth to third sounds like success, but if the page loads slowly, products are badly merchandised, filters fail on mobile, delivery is unclear or product pages do not convert, the extra traffic earns little. That is why we connect SEO with Shopify development and CRO: SEO says a collection deserves more traffic, CRO asks what happens when it arrives, and development builds what both need.

The same applies to AI search: a ChatGPT mention is interesting, but a citation that brings customers who buy is what counts, so we expect reports to combine visibility, non brand traffic, revenue, AI citations, AI referrals and conversion rather than swapping one vanity metric for another. Our Shopify SEO agency handles the technical and traditional side, and our AI SEO service covers AI discovery.

Frequently Asked Questions

What is the best ecommerce SEO agency in the UK?

There is no single best agency for every store. Look for ecommerce results measured in revenue, technical skill on your platform, commercial reporting and an approach to AI search, and compare case studies rather than ranking claims.

What does an ecommerce SEO agency do?

It grows organic visibility for category, product and content pages through technical SEO, site architecture, keyword research, content, internal links, structured data, product feeds and digital PR, and increasingly tracks AI search citations too.

How much does ecommerce SEO cost in the UK?

It varies with catalogue size, competition and scope. Why Matters publishes an SEO retainer from £1,500 a month and ClickSlice from £2,500, while larger agencies quote bespoke projects, often with minimums of $5,000 or more.

Which SEO agencies publish their prices?

Of the ten agencies in this guide, only Why Matters and ClickSlice publish a monthly starting price on their own sites. Re:signal publishes its AI audit price, and the rest quote individually.

Is SEO dead now with AI?

No. Google says its AI Overviews and AI Mode are rooted in its core Search ranking systems and need no extra technical requirements, so pages must still be crawlable, indexed, useful and eligible for a snippet.

How long does SEO take to work?

There is no fixed timetable. Technical fixes can move quickly, while competitive category terms take months; Propeller says ecommerce clients often see movement within three to six months and stronger revenue over six to twelve.

What should an SEO audit include?

Crawlability, indexation, site architecture, category and product pages, structured data, Core Web Vitals, internal links, content gaps, backlinks and AI visibility, prioritised by commercial impact. Our free Shopify audit is delivered within three to five working days.

Final Thoughts

For Shopify brands wanting SEO, development and AI search together, with a published price, start with Why Matters. For larger brands wanting ecommerce only specialists, compare NOVOS and Re:signal; for SEO inside a wider performance programme, Impression; for pure organic search, Blue Array and StudioHawk; for AI led discovery, Found, NOVOS, Re:signal and Impression; for a large UK team with GEO, The SEO Works; for SEO built into a Shopify project, Propeller; and for published entry pricing, ClickSlice.

Shortlist three, not ten, and give each your platform, revenue, organic revenue, key products, competitors, current SEO problems, development resource, markets and budget. Then ask what they would do in the first 90 days, why in that order and how they would prove commercial value, because that answer tells you more than any top ten list. See our Shopify SEO agency page or request our free Shopify SEO audit.

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