The Best eCommerce Marketing Agencies in London Shortlist

For London-based ecommerce brands, improving market share and increasing revenue is becoming a more and more difficult task, with customer acquisition costs rising by over 60% in the last five years. But navigating this difficult landscape and reaching your business goals can be a great deal easier with the help of a dedicated ecommerce marketing agency.

Engaging the right agency with a tailored strategy can provide your marketing team with the additional expertise and resource needed to drive revenue and market share growth and improve the overall ROI of your marketing function.

But the key to achieving this is that it needs to be the right agency – one that integrates seamlessly with your team, that has expertise in your niche and is honest with you. With competition between agencies also higher than ever – there were double the number of agencies in 2024 than in 2012 – it can be a challenge to find the right one. To help guide you for the right choice for you, we’ve made this shortlist of the best eCommerce marketing agencies in London.

What Makes for a Top eCommerce Marketing Agency in the City?

There are multiple factors that make a top eCommerce agency and, as one ourselves, we know the intricacies of getting it right. In putting together this shortlist we developed a set of criteria to assess our shortlist against, which defined a number of factors that indicate true quality for an eCommerce marketing partner. We’ve listed the most important factors below.

Based in London Themselves

Perhaps the most important criteria is that the agency needs to operate from, or have a hub within, London. The capital has an enigmatic, hard-to-capture feel at times, acting almost like it’s own microcosm within the UK. For London-based brands, it’s key to work with a partner who understands your culture, your challenges, and can get on top of the trends that affect you as and when they happen.

Proven, published results within eCommerce and for London-based brands

A credible B2B agency should make proof effortless to verify. Look for detailed, published case studies that move beyond vanity metrics to show the commercial impact on revenue and profitability. Genuine social proof should include third-party validation such as industry awards, independent reviews, and named client testimonials with clear baselines, actions and outcomes, and there should be local relevance working with connections to brands based in London.

Specific expertise across different verticals and sectors

ECommerce isn’t a single market: fashion and retail require seasonality planning and merchandising coordination, gifting spikes around tight seasonal windows, while food & drink brings subscription and margin constraints. A top agency can show frameworks and playbooks tailored to each vertical and back them with examples of implementation.

Individualised strategies and cross-channel execution

The minimum requirement should be a strategy anchored in your commercial goals and constraints, with a clear hypothesis, prioritised roadmap, and forecasted results. Look for clarity on roles, strategies that line up to your ICP behaviour and best-performing channels, and what success looks like at 30/60/90 days and beyond. Individualisation shows up in audience design, creative testing matrices, and channel sequencing that matches your funnel, not a template.

Relationship fit, communication and stakeholder management

Performance is sustained by partnership. The right agency is responsive, candid, able to challenge assumptions without ego, and to adapt to changing priorities without losing momentum. Strong communication looks like proactive weekly updates, clear action owners, and reporting that translates channel metrics into commercial impact. Confident stakeholder management is critical in eCommerce from senior oversight when it matters, a stable day-to-day team, and the confidence that your agency can handle exec reviews, defend budgets, and keep everyone focused on outcomes rather than outputs.

With those factors in mind, we’ve put together our comprehensive shortlist of the best eCommerce marketing agencies in London.

Our Top London eCommerce Agencies Shortlist

1. POLARIS

POLARIS are a Holborn-based agency within London specialised in ecommerce organic search and demand-generation marketing with particular experience within the fashion, gifting, food and hospitality, and wholesale ecommerce sectors.

With over 15 years of industry experience, POLARIS boast that their first client is still with them today in the form of eCommerce business Fruit4London. Award winners at the European search awards for their transformative eCommerce work with Dune London, boosting traffic across the middle and bottom funnel segments, powering a boost in conversions and impressive revenue growth for a fellow London-based brand.

Channel Specialisations

• Organic
• Paid
• Earned Media
• CRO
• Site Migrations

Industry and Sector Specialisations

• Fashion
• Wholesale
• Gifting
• Food & Hospitality

Notable ecommerce clients

• Dune London
• Fruit4London
• Virginia Hayward
• Hampers.com
• Goddiva

Services they Offer

• SEO / Organic Search
• PPC / Paid Search
• Digital PR
• Content Marketing
• Website Migrations

Why Choose POLARIS?

• Deep experience within eCommerce with specific, validated results driving improved conversions, market share, and revenue growth through their channel specialisations that have resulted in industry awards.
• A relationship-focused agency that is selective with the clients they work with, valuing an open, productive partnership where teams happily and cooperatively work together.
• Highly structured working methodology with strategy handled by senior leaders and execution by specific delivery teams. Channel-based work is siloed into separate, concurrent workstreams for more detailed collaboration and faster progress.
• Detailed, individualised strategies and working methods that meet the client where they currently stand and deal with their specific challenges and landscape – no blanked implementation and no routine playbooks by industry and business size.
• If you are a growth-focused brand with a high retainer budget (over £10,000) POLARIS are the premium choice producing high quality, award-winning work in the ecommerce sector.

2. RVS Media

RVS Media is an Old Street–based eCommerce development and digital marketing agency. They specialise in building and scaling stores on Adobe Commerce/Magento, Shopify and BigCommerce, and pair this with in-house SEO and PPC to drive growth for B2C and B2B retailers. The agency is award-winning (UK Business Tech Awards 2021 winner; subsequent finalists) and publishes case studies across gifting, food, home and beauty.

Channel Specialisations

• Ecommerce platform development Adobe Commerce/Magento, Shopify, BigCommerce)
• SEO / Organic
• PPC / Paid Media
• CRO & UX

Industry & Sector Specialisations

• Food & catering
• Bakery
• Gifting
• Home & furniture
• Beauty & wellness.

Notable eCommerce Clients

• Owen Brothers Catering
• Temptation Gifts
• Gemar
• Arapina Bakery
• CBD Armour

Services They Offer

• Ecommerce design & development
• Integrations
• Migrations
• SEO, PPC, Content marketing
• Mobile app development.

Why Choose RVS Media

• Recognised, award-winning London team with platform depth across Adobe Commerce, Shopify and BigCommerce.
• Clear, results-led case studies (e.g., 2,419% ROAS and 340+ orders in 3 months for OBC via PPC).

3. Cake Agency

Cake is a UK eCommerce agency “founded by retailers for retailers,” combining Shopify development with performance marketing. They operate from Birmingham’s Jewellery Quarter and have a London base on Euston Road, giving easy access for brands in the capital. Their site showcases a wide client mix and a three-part Mobius Methodology that ties brand, development and marketing together.

Channel Specialisations

• Shopify & Shopify Plus development, replatforming, custom apps.
• Paid media (Meta, Google, TikTok/Pinterest), full-funnel.
• SEO / Technical SEO
• CRM & Email (Klaviyo), loyalty and affiliate programmes.

Industry & Sector Specialisations

• Fashion & footwear
• Lifestyle & accessories
• Home & gifting
• Coffee/food & drink
• Outdoors/automotive

Notable eCommerce Clients

• P&Co
• Cyberjammies
• LUKE 1977
• TentBox
• The British Blanket Company
• Bad Monday
• &SONS
• Dancing Leopard.

Services They Offer

• Strategy & audits (Mobius), branding & creative.
• Shopify/Shopify Plus builds, migrations, integrations, mobile & web apps.
• Performance marketing (Meta/Google), SEO, CRM & email, loyalty, affiliate

Why Choose Cake

• Retailer-led team with a proven Shopify Plus pedigree and a London presence for stakeholder access.
• Published case studies with quantified outcomes (e.g., TentBox: +200% Meta revenue; +23% ROAS; 93%+ search impression share).
• Clear methodology (Mobius) and proprietary tooling (CSI Predictor) to connect forecasting with execution across channels.

4. FOUND

FOUND is a Holborn/Clerkenwell-based digital marketing agency with a strong eCommerce pedigree. Positioning itself as an “AI-first Everysearch™” agency, FOUND blends SEO, PPC, paid social, digital PR, content, CRO and data science—underpinned by its Luminr visibility engine—to grow brands across search, social and AI surfaces.

Channel Specialisations

• SEO
• Paid media: PPC, paid social, programmatic, Meta advertising
• Digital PR & content;
• CRO

Industry & Sector Specialisations

• Fashion & footwear
• Gifting/marketplaces
• DIY/home improvement
• Consumer electronics

Notable eCommerce Clients

• Secret Sales
• Bonmarché
• Clarks Originals
• Funky Pigeon
• House of Marley
• One4All (Blackhawk Network)
• Toolstation

Services They Offer

• SEO, PPC, paid social, programmatic
• Digital PR & content marketing
• Strategy & market research
• CRO/creative
• Data science & analytics
• AI & automation

Why Choose FOUND

• Proven eCommerce case studies across multiple verticals (from fashion to gifting and DIY), published with clear missions and outcomes.
• AI-led “Everysearch™” methodology with proprietary Luminr tech to track visibility across search, social and LLMs.
• Recognised quality: Google Premier Partner status and recent UK awards shortlists/finalist mentions.

5. Push

Push is a City of London–based digital marketing known for pairing performance media with AI-led optimisation. From its Liverpool Street base, the team runs paid search, paid social, SEO and CRO for growth-minded eCommerce brands, backed by partnerships with Google, Microsoft, Meta and TikTok and a track record of award recognition.

Channel Specialisations

• Paid Search
• Paid Social & Media
• SEO & Digital PR support; CRO
• Creative production & Social Media Management

Industry & Sector Specialisations

• Beauty, skincare & personal care
• Health & wellness / pharma OTC
• Sports nutrition & CPG
• Fashion & apparel (DTC)

Notable eCommerce Clients

• Mo Bros
• Neal’s Yard
• Oralieve
• Tailwind Nutrition

Services They Offer

• Media buying across Google, Microsoft, Meta, TikTok & YouTube; Pay-Per-Lead programmes
• SEO (incl. B2B), CRO, analytics support; creative & content production
• Consultancy, training & AI-driven marketing enablement

Why Choose Push

• London team with deep platform partnerships and six-years running recognition from Google & Microsoft.
• Published eCom case studies with hard commercial outcomes (revenue growth, CAC reduction, ROAS).
• Broad channel coverage plus in-house creative and CRO, enabling fast testing loops and full-funnel execution.

6. KAMG

KAMG (Kas Andz Marketing Group) is a Holborn/City-based eCommerce marketing agency. Their focus is tight and performance-led across Email, SEO and PPC, with platform-specific expertise for eCommerce brands.

Channel Specialisations

• Email marketing
• SEO (eCommerce, technical, international; Shopify/Magento/WooCommerce/CMS)
• PPC (Google Ads & eCommerce PPC)

Industry & Sector Specialisations

• Fashion & apparel
• Medical supplies & healthcare retail
• Books & publishing
• Finance/Investment & B2B SaaS (selected projects)

Notable eCommerce Clients

• Crazy Boxer
• Mediworld
• Trackinsight
• SifatuSafwa

Services They Offer

• Email marketing services (newsletters, lifecycle, strategy)
• SEO services (technical, platform SEO incl. Shopify/Magento/WooCommerce, CMS SEO)
• PPC management (Google Ads, eCommerce PPC)

Why Choose KAMG

• Central London location with a clear eCommerce remit across Email, SEO and PPC.
• “Award-winning” positioning with published service depth and platform expertise.
• Pragmatic, transparent communication (Slack channel for updates) and straightforward processes designed for pace.

7. Reload Digital/s360

Reload Digital is now s360 UK—an eCommerce growth agency based near London Bridge. They pair brand & performance strategy with SEO, paid media, email/CRM and creative to grow DTC and omnichannel retailers.

H3: Channel Specialisations

• SEO / Organic (eCommerce & technical)
• Performance marketing & PPC (Google/Microsoft)
• Paid social & digital creative (Meta, TikTok, DOOH, Display)
• Email & CRM / lifecycle marketing
• eCommerce consulting, analytics & reporting

H3: Industry & Sector Specialisations

• Fashion & apparel / luxury
• Beauty, cosmetics & skincare
• Home & living / lifestyle
• Reload Digital
• DTC brands & omnichannel retail

H3: Notable eCommerce Clients

• Victoria Beckham
• Wrangler
• Lee
• New Era
• Nuxe
• Emma Bridgewater

H3: Services They Offer

• Brand & performance strategy; eCommerce growth consulting; international expansion support.
• SEO, PPC, paid social; email/CRM; digital creative & content

H3: Why Choose Reload Digital/s360

• Central London presence for stakeholder access and speed.
• Backed by s360’s European network (300+ specialists) after the 2023 acquisition and 2024 rebrand.
• Strong platform partnerships (Google Premier, Meta, Shopify Plus) and a fashion/retail-first focus.

8. Social Shepherd

The Social Shepherd is a social-first performance agency with teams in London and Bath. They specialise in Social, Paid (Paid Social & Paid Search), Creative (video & motion) and Influencer/UGC, blending creative and performance for eCommerce and omnichannel brands.

Channel Specialisations

• Organic social: strategy, community management, content, social listening.
• Paid media: Paid Social & Paid Search (full-funnel planning, buying, feed/shopping).
• Creative: social-first video, motion/animation, UGC to high-production.
• Influencer & creators: end-to-end campaign management, DR & brand goals.

Industry & Sector Specialisations

• Fashion & apparel
• Beauty & skincare
• Home & furniture
• Food & drink / CPG
• Travel & hospitality
• Toys & entertainment

Notable eCommerce Clients

• UNIQLO
• Passenger
• 19 Crimes
• Lumene
• Neptune

Services They Offer

• Social strategy, community & content; analytics & insights; social listening
• Paid Social & Paid Search; feed optimisation & Shopping
• Social-first creative production (video, motion, design)
• Influencer/UGC campaigns & reporting

Why Choose Social Shepherd

• Multi-award-winning social agency (including Best Large Social Agency 2023 & 2024).
• Integrated creative + performance model built for social-driven eCommerce growth.
• London and Bath presence for easy stakeholder access and collaboration

9. Growthcurve

Growthcurve is a full-funnel growth marketing agency with a London base near Liverpool Street and has a New York presence. They combine paid social, PPC, CRO and creative production to scale DTC and omnichannel brands—supported by in-house strategy and testing.

Channel Specialisations

• Paid social & user acquisition (Meta/TikTok)
• PPC / Paid search
• Conversion Rate Optimisation & landing pages
• Creative production & motion
• Retargeting & full-funnel growth strategy

Industry & Sector Specialisations

• DTC & ecommerce
• Beauty & skincare
• Consumer & FMCG
• Marketplaces & retail platforms

Notable eCommerce Clients

• Unilever
• com
• Wherefrom
• GoldRepublic
• Skin Choice Ltd

Services They Offer

• Growth marketing & strategy; experimentation and testing
• Paid social, PPC & retargeting
• CRO & landing page development
• Creative production (video, motion, design)
• App Store Optimisation (where relevant)

Why Choose Growthcurve

• Central London access with an “award-winning” growth remit spanning creative, media and data.
• Elastic, cross-disciplinary team built to run full-funnel programs for ecommerce brands.

10. inBeat

inBeat is a creator-led growth agency with a London presence, specialising in micro-influencer programmes, UGC production and paid media amplification across Instagram and TikTok. They blend influencer sourcing, content creation and dark-posting to drive measurable eCommerce growth.

Channel Specialisations

• Influencer marketing (micro, nano, macro) across TikTok & Instagram
• UGC production & creator management
• Paid media integration (TikTok, Meta; dark posting)
• TikTok Shop & product seeding/sampling
• PPC/Google Ads support where relevant

Industry & Sector Specialisations

• Direct-to-Consumer (DTC) & CPG
• Beauty & skincare
• Fashion & footwear
• Home & appliances/kitchenware
• Mobile apps (selected projects)

Notable eCommerce Clients

• New Balance
• Prose
• Hurom
• Nordstrom
• Native
• Soylent

Services They Offer

• Influencer discovery, vetting and relationship management
• UGC strategy and end-to-end content production
• Paid social amplification (TikTok, Meta) and testing
• Product seeding/sampling, panels & casting
• Reporting, optimisation and cross-platform rollout

Why Choose inBeat

• Micro-influencer depth with access to a large creator network for scalable campaigns.
• Integrated model (influencer + UGC + paid) geared to performance for retail/DTC.
• London activation capability for local creators and stakeholder access.

11. Re:Signal

Re:signal is a London-based eCommerce SEO specialist, with a hub in Paddington – though they have predominantly remote working methods. They focus on strategy-led SEO for retail brands and are multi-award winners across the UK, European and Global Search Awards. Explore their work at resignal.com.

Channel Specialisations

• eCommerce SEO strategy & consulting
• Technical SEO and platform optimisation (SFCC, Shopify Plus, Magento) & migrations
• Content strategy and on-site optimisation (category & PDP)
• Digital PR & authority building
• International/multimarket SEO

Industry & Sector Specialisations

• Sports & outdoors / athleisure
• Fashion & apparel
• Home & furniture
• Health & wellness
• Travel & marketplaces

Notable eCommerce Clients

• ASICS
• FatFace
• OKA
• Healthspan
• Loop Earplugs

Services They Offer

• SEO strategy & consulting
• Technical SEO & migrations; platform SEO
• Content strategy & production
• Digital PR & outreach
• International SEO

Why Choose Re:Signal

• Award-winning, eCommerce-only SEO focus with recognised wins in 2024.
• Deep category/PDP and platform expertise built for retail growth.
• Active contributors to the retail SEO community via the Re:commerce conference.

Creating a Request for Proposal (RFP Document)

When beginning the process of working with an agency, you’ll typically create a Request for Proposal document that details what you’re looking for in a partner and what you want to achieve with them.

To help you create your own RFP, take a look at our downloadable Request for Proposal template.

Why Use an eCommerce Agency?

A specialist eCommerce agency compresses learning curves and compounds ROI. Instead of trial-and-error, you get a senior team that’s already tested thousands of variants across search, social, email, CRO and creative. That means faster wins, clearer prioritisation, and budget moving to what works—reducing CAC while protecting margin and LTV.

Agencies expand visibility and market share by orchestrating channels as a system. Technical SEO fixes improve crawl and PDP/PLP performance; Shopping feed hygiene lifts impression share; paid media builds demand where your customers actually spend time. Crucially, reporting is unified—so you can see how upper-funnel activity influences branded search, how creative affects conversion, and where to shift spend next.

Customer experience improves because the whole journey is optimised, not just the ad. CRO and UX remove friction from landing pages to checkout; lifecycle programmes (email/SMS/loyalty) turn first orders into repeat customers with relevant, timely messaging. The outcome is higher conversion rates, bigger baskets, and stronger retention.

You also gain resilience and speed. Agencies bring platform partnerships, best-practice playbooks, and specialist talent on tap—technical SEO one day, TikTok creative the next—without the hiring risk or delay. They manage migrations, seasonality, and stock or pricing changes with clear runbooks and proactive communication to your stakeholders.

Finally, strategy gets sharper. A good partner aligns to your commercial goals, builds a roadmap with hypotheses and experiments, and holds everyone to measurable outcomes. The result: confident decision-making, predictable growth, and a team that scales as you scale.

London eCommerce Agency FAQs

Find the Right Agency for Your Business Needs

Get help finding the right agency for your London-based or UK-based business with our other shortlists:

• The Top Branding Agencies in London
• The Best SEO Agencies in London
• The Best B2B SEO Agencies

About the Author

Sam is a Senior Strategist at POLARIS, working across the agency’s core ecommerce accounts. He has experience increasing visibility and growing brand revenue across multiple ecommerce verticals including fashion, home and garden, fitness and lifestyle, gifting, manufacturing and food or hospitality. His work was recognised at the 2025 European Search Awards where he was nominated for Emerging Talent and part of the winning entry for the Best SEO Campaign.