.svg)
.svg)
.svg)
.svg)
.svg)
A digital marketing agency plans, builds, and manages a brand’s online marketing across channels such as paid media, SEO, social, and content, typically handling both strategy and day-to-day execution for a fee.
London has hundreds of agencies claiming to do this well. Choosing a digital marketing agency in London usually comes down to three checks: does the team actually sit in a London office rather than serving the city remotely, can they point to a client result with a real number attached, and does their pricing hold up once you ask for a breakdown.
Across the UGC and paid social campaigns inBeat has run for consumer app and CPG clients, pairing micro-influencer content with paid social distribution has cut Paid Media CPA by up to 75% within the first few months of testing. The pattern held in the NielsenIQ Unroll.me campaign, which also crossed 100,000 app installs a month.
Below are 25 agencies with a verified London office, compared side by side, followed by a full breakdown of each.
What qualified an agency for this list
- A verified London office address, confirmed via the agency’s own site, Companies House, LinkedIn, or a Clutch/G2 profile. Serving London clients remotely doesn’t count.
- In-house delivery across at least three core channels (paid, organic, content, or a comparable spread), not a single-channel shop dressed up as full-service.
- At least one independently checkable case study or number: a Clutch review count, a Google Business rating, a certification badge, or a published client result. Not just a claim on the agency’s own homepage.
- Evidence of active client work in the last 12 months, via a recent case study, updated portfolio, or LinkedIn activity.
- A clean company status on Companies House: active, not dissolved, in administration, or in liquidation. Four agencies were dropped from an earlier draft of this list after this check turned up exactly those problems.
The agencies, in detail
1. Gripped
Gripped is a B2B agency at 38 Southwark Street, Southwark, London SE1 1UN, focused on SaaS and tech companies converting existing demand into revenue.
It runs high-intent SEO and paid search to capture buyers already searching, paired with paid social for those still deciding. Everything is tracked to pipeline rather than vanity metrics.
Its Blackdot case study reports £2.1M in pipeline generated within a year, and Data Interchange saw a 1,540% lift in conversions after a site redesign paired with paid and organic work. Gripped holds 32 verified reviews on Clutch.
Industries: SaaS, technology, B2B
Notable clients: Boundless, Epicor, Video Arts Limited
Reason to work with Gripped: Fits B2B and SaaS teams that need pipeline reporting, not just traffic or engagement metrics.
2. Iconic Digital
Iconic Digital operates from 7 Adam Street, The Strand, London WC2N 6AA, running a full-service model that covers SEO, paid, CRM, and web design under one roof.
The agency holds direct partnership ties with Google and Meta and has picked up more than 25 industry awards. Work spans lead tracking, site design, and campaign execution across paid and organic channels.
The Hot Tub & Swim Spa Company saw a 427:1 return through combined search and paid, and Shred-on-Site doubled web traffic with a 145:1 ROI from SEO alone.
Industries: Tech, food & beverage, B2B, SaaS, eCommerce
Notable clients: Mademoiselle Desserts, Carpigiani UK, Ernst & Young, Spotler UK, Alliance Buying Group
Reason to work with Iconic Digital: A fit for brands that want one team accountable for the full funnel, from SEO through to CRM.
3. inBeat
inBeat specialises in influencer marketing, UGC production, and paid social for DTC, mobile app, and CPG brands.
It runs micro and nano-influencer campaigns at scale, sourcing from a vetted network described as the top 2% of content creators, then feeds that content into paid ad testing and optimisation. Outreach and SEO, plus email and SMS, round out the offer.
For NielsenIQ’s Unroll.me relaunch, inBeat’s micro-influencer UGC combined with paid social cut Paid Media CPA by 75% and drove over 100,000 monthly app installs.
Industries: Mobile applications, CPG and DTC, retail, eCommerce, fashion, food, SaaS, B2B
Notable clients: New Balance, Deux par Deux, Linktree, Hopper, Nissan, Disney, Hurom
Reason to work with inBeat: Best suited to brands running UGC and micro-influencer content through paid social, where creator access and testing speed matter more than a single flagship campaign.
4. Make Agency
Make Agency is based at The Old Dairy, 110-122 Clifton Street, Shoreditch, London EC2A 4HT, and has run since 2014 across web design, social, and campaign delivery.
In the past decade it has shipped over 200 websites, published 100,000+ social posts, and picked up 11 industry awards, including a WebAwards win for Soldo’s CMS rebuild. Services split across web build, paid social, and content production.
Addison Lee’s Meta and Google Ads work doubled revenue and lifted first-time bookings by 200%, and the RE:ACT social campaign delivered a 170% follower increase in 90 days.
Industries: Real estate, technology, hospitality, retail, finance
Notable clients: Knight Frank, CBRE, Soldo, Asana, Accor
Reason to work with Make Agency: Suited to brands that want web build and paid social handled by the same team, with a decade of published case studies to check against.
5. Passion Digital
Passion Digital operates from Holborn Tower, 137-144 High Holborn, London WC1V 6PL, and has run since 2012 across SEO, PPC, paid social, content, and analytics.
The agency holds 33 reviews on Clutch and a 4.2 Glassdoor rating from 41 reviews. Its work combines data analysis with in-house creative production for paid and organic channels.
Knight Frank’s paid social campaign delivered a 106% jump in Meta engagement, cut CPL by more than half, and added 10,000+ TikTok followers, winning Social Media Campaign of the Year 2024. Yoga London’s PPC work produced a 98% spike in conversions and doubled ROAS.
Industries: eCommerce, fashion, beauty, health & wellness, B2B
Notable clients: Knight Frank, Yoga London
Reason to work with Passion Digital: A fit for brands that want paid social and PPC handled by the same team that also builds the creative.
6. Hex Digital
Hex Digital is based at 12 Greenhill Rents, Clerkenwell, London EC1M 6BN, with close to two decades of experience in UX, product design, and development.
It builds custom tools alongside client work, including PerformanceGrade™, which audits where a digital product is losing conversions. Services span branding, product design, and technical development.
Whirli went from zero to 10,000 paying users in eight months with Hex Digital’s support, backing a £4M seed raise and a 4.8/5 Trustpilot rating. Too Good To Go’s CMS switch led to a 30% jump in conversions through cleaner UX.
Industries: Technology, retail, non-profit, fashion, eCommerce
Notable clients: Lenovo, Michael Kors, Harvard, Wasabi Sushi & Bento, Tessian
Reason to work with Hex Digital: Best suited to product-led brands that need design and development handled together, not handed off between vendors.
7. Semetrical
Semetrical runs from 124 City Road, Old Street, London EC1V 2NX (registered office: 64 Southwark Bridge Road, SE1 0AS), and has picked up titles including Best Small SEO Agency at the UK Search Awards.
The agency builds custom tracking tech alongside SEO, paid, social, CRO, digital PR, CRM, and inbound work for enterprise clients, with every campaign tied to conversions and authority benchmarks.
Ocean Florida’s PPC and keyword system delivered a 54% traffic lift, 22% more conversions, and a £13.31 CPA. After a 13% budget increase, the follow-up phase pushed traffic up 50% and profit up 50%.
Industries: eCommerce, enterprise, fashion, international, B2B, travel
Notable clients: Ticketmaster, Stripe, OnTheMarket, Lexis Nexis
Reason to work with Semetrical: Fits enterprise brands that want custom-built tracking behind their SEO and paid campaigns, not off-the-shelf dashboards.
8. Elixirr Digital
Elixirr Digital (rebranded from Coast Digital) is based at 12 Helmet Row, Old Street, London EC1V 3QJ, running creative, data, design, development, and AI work in-house.
The team handles strategy through execution across PPC, SEO, UX, and CRO, without outsourcing any stage of delivery. Reporting ties every campaign back to a stated business outcome.
EMP’s PPC work delivered a 2x return on ad spend, cut CPA by 42%, and lifted revenue 150% year-on-year. Cystic Fibrosis Trust’s SEO-led campaign drove an 84% spike in one-off donations and 153% more regular donations.
Industries: Charity, eCommerce, education, finance, government, hospitality, insurance, manufacturing, medical, property, retail, technology, travel
Notable clients: EMP, Debenhams, DAZN, Wesleyan, Hitachi ABB Power Grids, Cystic Fibrosis Trust
Reason to work with Elixirr Digital: Suited to brands across regulated or complex sectors that need PPC, SEO, and UX coordinated by a single in-house team.
9. Elevate Digital Solutions
Elevate Digital Solutions operates from The Dock, Tobacco Quay, Wapping Lane, Wapping, London E1W 2SF, founded in 2018 and focused on SEO, PPC, CRO, and web design.
Its Funnel Flow AI tool audits a client’s full funnel and returns specific, actionable fixes rather than a generic report. Work is scoped to hit revenue targets directly, not just traffic growth.
Buy Flooring Online doubled online sales through the agency’s work, and other clients have reported revenue increases as high as 4,000% alongside a near 2,000% jump in organic traffic following SEO and marketplace refinement.
Industries: Events, travel, coaching, eCommerce, healthcare, finance
Notable clients: OM & Bass, Hello Guest, Flexa, Carpet City
Reason to work with Elevate Digital Solutions: Best for eCommerce and lead-gen brands that want a proprietary audit tool behind their SEO and CRO work.
10. Nautilus Marketing
Nautilus Marketing is based at 85 Great Portland Street, Fitzrovia, London W1W 7LT, with over a decade of experience across web, app, and campaign design.
The agency holds a 5.0 rating on Trustpilot from 51 reviews and 173 five-star Google reviews. Services span web and app design, organic and paid campaigns, content, digital PR, and social, with no contract lock-in.
A Tidy Mind’s SEO work produced a 45.5% jump in organic clicks, first-page rankings, and a domain authority climb from 31 to 38.
Industries: Hospitality, food & beverage, eCommerce, fashion, financial services, technology
Notable clients: Wordfence, We are Padel, Flown, A Tidy Mind
Reason to work with Nautilus Marketing: A fit for brands that want a flexible, contract-free arrangement backed by a strong independent review record.
11. Propeller
Propeller has run from Colebrooke Row, Islington, London (and New York) for over two decades, holding 22 reviews on Clutch.
The team combines UX, analytics, web development, CRO, PPC, social, SEO, and content into campaigns built around customer behaviour data, rather than a single channel.
Twinings’ work with Propeller led to a 200% jump in conversions and a 40% lift in mobile sales, while Boy Smells saw 60% annual sales growth and a 33% returning customer rate.
Industries: Fashion, luxury brands, retail, members clubs, property, hotels & travel, food & drink
Notable clients: Zizzi, Mylands, Celtic Manor, Hall & Woodhouse, Twinings, Boy Smells
Reason to work with Propeller: Suited to retail and hospitality brands that want UX and CRO work tied directly to conversion and retention numbers.
12. Tug Agency
Tug is headquartered at Victoria House, 1 Leonard Circus, Shoreditch, London EC2A 4DQ, running global campaigns from six offices since starting there in 2006.
The agency built its own Tug Labs technology to power decisions across SEO, PPC, paid social, and programmatic buying, aiming to make every pound of ad spend traceable.
END’s campaign delivered a 126% ROAS jump in four weeks and lifted average basket size by 34%. Zipcar’s podcast-driven test secured 4:1 ROAS and a 5% rise in new signups, tracked with 90% attribution confidence.
Industries: B2B, SaaS, retail
Notable clients: Milk & More, Zipcar, END, CALM
Reason to work with Tug Agency: A fit for brands that want in-house attribution technology behind paid media decisions, not third-party black-box reporting.
13. 303 London
303 London is a boutique agency at Coda Studios, Munster Road, Fulham, London SW6 6AW, built for premium and luxury brands, with an average Clutch rate of $100-149/hr.
Its “Eco-System” model combines high-end visuals, paid performance, and organic distribution under one team, aimed at brands that want style and measurable return together.
The Little Car Company campaign pulled in 1 million impressions, 30k video views, a 137% spike in lead forms, and a 90% jump in site traffic. Wildman’s email sequence brought in over £80k in revenue and more than doubled click-throughs.
Industries: Premium and luxury brands across sectors
Notable clients: Sigma Sports, Rapport London, Collecting Cars, Waterrower UK, Puresport
Reason to work with 303 London: Best suited to premium and luxury brands that need creative production and paid performance from the same small team.
14. LOCALiQ UK
LOCALiQ is the UK arm of Newsquest Media Group, based at Queens House, 55/56 Lincoln’s Inn Fields, London WC2A 3LJ, connecting to over 45 million UK users a month through 200+ local news brands.
It holds Google Premier, Meta Business, and Microsoft Elite Partner certifications, and runs SEO, PPC, paid social, video, display, and print through a proprietary Cross Media Optimisation platform.
That platform has cut cost-per-lead by up to 70% for clients, including a 466% lift in conversions for Pet Flaps UK. Note this is a nationwide network’s UK headquarters rather than a boutique London-only agency.
Industries: Automotive, dental, eCommerce, education, finance, healthcare, property, recruitment, legal, travel & hospitality
Notable clients: Springboard, Events Hospitality, Parfitt Cresswell, Circus of Horrors
Reason to work with LOCALiQ: Fits local and multi-location businesses that want enterprise-level ad tech without an enterprise-level retainer.
15. Digitas UK
Digitas operates from 40 Chancery Lane, London WC2A 1JA, as part of the Publicis network with 65 offices and experience across 5,500+ clients globally.
In 2019 it ranked #11 on Econsultancy’s Top-100 Digital Agencies, reporting £84.9 million in UK fee income. It runs creative strategy, media planning and buying, SEO, PPC, CRM, platform development, and data work.
EE’s “Phonesmart” campaign drove a 600% jump in UK engagement around AI education content, run through Digitas’s combined creative and media planning teams.
Industries: Retail, automotive, financial services, technology, healthcare
Notable clients: Lexus, Oreo, E.ON
Reason to work with Digitas UK: A fit for large brands that need global-network scale and media buying power in one contract.
16. Weller Media Agency
Weller Media Agency (WMA) started in London over 20 years ago and now runs from eight creative hubs worldwide, with a London base at The Old Treacle Factory, Goodwin Road, Shepherd’s Bush, W12 9JW.
The agency focuses exclusively on music, entertainment, and lifestyle clients. WMA Studios handles photography, videography, design, and development in-house, without external handoffs.
WMA also brokers partnerships between brands and artists or influencers, running collaborations across festivals, tours, and lifestyle launches for entertainment-sector clients.
Industries: Music, entertainment, lifestyle, luxury, fashion, streaming, retail, gaming
Notable clients: Netflix, Twitch, Disney, Gucci
Reason to work with WMA: Best suited to entertainment and lifestyle brands that need talent partnerships built into the marketing plan itself.
17. Finsbury Media
Finsbury Media is a Google Premier Partner agency with a London office at 86-90 Paul Street, Shoreditch, London EC2A 4NE, alongside a wider UK presence.
The agency offers free SEO and PPC audits before setting up campaigns, backed by a decade of hands-on delivery across search, social ads, web, and email.
Local clients rate the agency 4.7 stars on Google, citing responsiveness and transparent, upfront pricing across SEO, Google and Bing Ads, and web design.
Industries: B2B, SaaS
Notable clients: Not published
Reason to work with Finsbury Media: A fit for local London businesses that want a free audit before committing to a retainer.
18. Beast Agency
Beast Agency is a content studio at 6-10 Dunston Street, Shoreditch, London E8 4EB, run by filmmakers, editors, producers, and animators with 10+ years in digital storytelling.
The team produces full-length features, TV spots, branded video, animation, and stills, working directly with clients rather than through account layers.
Burger King’s “Whopper No Show” campaign won a Bronze Lion at Cannes, and the agency has continued producing campaign films built for emotional recall over straight product messaging.
Industries: Fashion, retail, eCommerce, food & beverage, entertainment, airlines, B2B
Notable clients: Adidas, British Airways, Memoto, IKEA
Reason to work with Beast Agency: Best suited to brands that need award-calibre video content produced by the same team running the strategy.
19. CB Digital
CB Digital is a boutique agency at 48 Charlotte Street, Fitzrovia, London W1T 2NS, running SEO, PPC, social, and content for over ten years.
The agency has taken clients to #1 on Google for high-competition terms and offers a free SEO checker as an entry point before scoping a retainer.
Friends House’s site relaunch, paired with targeted outreach, led to a 219% jump in conversions. The content team also handles blog posts, guides, and reports that feed directly into link-building work.
Industries: eCommerce, healthcare, professional services, real estate, technology
Notable clients: Friends House, Bella Bathrooms, Clifton Packaging, Direct Air, Oak Furniture House
Reason to work with CB Digital: Fits brands that want SEO and content handled by the same small team, without layers of account management.
20. Devstars
Devstars is a digital consultancy at Unit G09, 111 Power Road, Chiswick, London W4 5PY, building custom platforms and software since 2003.
The team combines digital strategy, UX/UI, CRO, technical SEO, and agile development across WordPress, eCommerce, and API-heavy builds, aimed at startups through enterprise teams.
Headmasters salons had their site rebuilt on WordPress to support 50+ branches, delivering fast load times and a 20% jump in page views within the first month.
Industries: Creative agencies, real estate/property, professional services, B2B
Notable clients: Headmasters salons, Islabikes, G4S, Molton Brown
Reason to work with Devstars: Best suited to businesses that need a technical rebuild or complex integration handled alongside SEO and CRO.
21. Found
Found has run search campaigns from Johnson Building, 77 Hatton Garden, London EC1N 8JS since 2005, and holds Google Premier Partner status.
The agency combines paid media, SEO, CRO, digital PR, content, and data science, built on its in-house Everysearch™ platform (branded Luminr), which surfaces visibility and competitor-positioning data no third-party tool replicates.
Toolstation’s campaign delivered a 40% year-on-year lift in search visibility and a 10% increase in target ROAS, achieved under a tight deadline.
Industries: eCommerce, travel & hospitality, B2B, financial & professional, SaaS, fintech
Notable clients: Many Pets, Vita Student, BHN, Edyn
Reason to work with Found: Fits brands that want proprietary search intelligence behind their SEO and paid media strategy.
22. The Social Shepherd
The Social Shepherd is based at 10 Devonshire Square, London EC2M 4YP, running a social-first model built around organic and paid social, content, community management, and influencer work.
The team describes itself as 50+ social specialists working across strategy, creative, and paid execution, with case studies published on its own site by sector.
Industries: DTC, consumer brands, retail
Notable clients: Not published (verify current roster directly before citing named clients)
Reason to work with The Social Shepherd: A fit for consumer brands that want organic and paid social run by the same specialist team, without folding it into a broader full-service retainer.
23. Born Social
Born Social operates from The Bard Building, 20 Curtain Road, Shoreditch, London EC2A 3NG, an IPA member agency focused on organic and paid social built around creative-first content.
The team builds platform-native creative and social strategy in-house, rather than treating social as an add-on to a broader media plan.
Born Social ran Uber’s global “Uberverse” social campaign, positioning the brand’s presence across platforms as one connected creative universe.
Industries: Consumer, technology, mobility
Notable clients: Uber
Reason to work with Born Social: Suited to brands that want social treated as the lead creative channel, not a supporting one.
24. We Are Social
We Are Social is based at Alphabeta, 14-18 Finsbury Square, London EC2A 1AH, one of the most recognised social-led creative agencies globally, covering strategy, content, paid social, influencer, and community.
The agency has built its reputation on culturally-driven campaigns for large, recognisable brands, treating social platforms as the primary creative brief rather than a distribution afterthought.
HSBC’s “#IsPossible” and “#ZeroRegrets” campaigns, run with We Are Social, are among its most cited work in the industry press.
Industries: Financial services, automotive, technology, retail
Notable clients: adidas, Netflix, Google, HSBC, Audi
Reason to work with We Are Social: Best suited to large, global brands that want a social-first creative agency with a track record at enterprise scale.
25. Goat Agency
Goat Agency is based at Rose Court, 2 Southwark Bridge Road, London SE1 9HS, running influencer marketing at global scale across discovery, campaign management, content, and connected commerce.
The agency reports around 750 influencer marketing staff working across 41 markets, giving it reach into regional creator networks that smaller agencies can’t match.
Its client roster spans large retail, FMCG, and finance brands running influencer campaigns across multiple markets simultaneously.
Industries: Retail, FMCG, finance, technology
Notable clients: Mars, Ford, Dell, NIVEA, Tesco
Reason to work with Goat Agency: Fits brands that need influencer campaigns run across many markets and languages at once, not a single-market creator network.
Questions worth asking before you sign
- Which channels does your team handle in-house, and which get subcontracted out? Get this in writing.
- Can you show me a case study with a number attached (CPA, ROAS, or conversion rate) from a client in my industry?
- What does the first 90 days look like, and what will I see reported weekly versus monthly?
- If my monthly ad spend changes by 20% in either direction, how does your fee structure adjust?
- Who is my actual point of contact day-to-day, and how many other accounts do they run?
FAQ
How much does a digital marketing agency in London cost?
London agencies typically charge between £1,000 and £10,000 per month, with SEO or PPC retainers commonly landing around £960-£1,100 (Expert Market, 2025). Smaller packages start at £500-£1,000 monthly, and enterprise-level campaigns can run £20,000 or more.
What’s the difference between a full-service agency and a specialist agency in London?
A full-service agency, such as Iconic Digital or Elixirr Digital, runs most channels in-house under one contract. A specialist agency, such as inBeat for influencer marketing or Tug Agency for programmatic media, goes deeper on fewer channels. Full-service suits brands that want one point of contact; specialists suit brands that already have most channels covered and need one area sharpened.
How long before a London agency shows measurable results?
Paid media campaigns typically show directional data within 4-8 weeks, enough to judge CPA or ROAS trends. SEO and content work usually takes 3-6 months before ranking or organic traffic shifts become clear, since it depends on competitive keyword difficulty and existing domain authority.
Do I need a London-based agency if my customers are mostly online?
Not strictly, but a London office gives an agency direct exposure to how UK GDPR and PECR enforcement plays out locally. ICO fines for PECR breaches alone totalled around £1.6 million in 2024 (ICO enforcement data via URM Consulting, 2024), and that local regulatory fluency matters most for email, SMS, and cookie consent setup.
What should I check before an agency starts running paid ad spend on my behalf?
Ask for a sample invoice showing how ad spend is separated from management fees, confirm whether reporting is weekly or monthly, and check their Clutch, Google Business, or Trustpilot reviews for mentions of billing transparency specifically, not just results.
What’s the best digital marketing agency in London?
There isn’t a single best digital marketing agency in London. It depends on which channel is the priority. For UGC and micro-influencer-led paid social, inBeat has the strongest track record on this list. For B2B demand generation, Gripped and Tug Agency lead on pipeline reporting. For full-funnel SEO and CRM work, Iconic Digital and Elixirr Digital cover the most ground in-house.
