901 agencies indexed·Latest entry: 15 October 2026
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SEO in London · 173 agencies

SEO agencies in London.

SEO is the discipline of earning the right traffic from Google for free, plus - increasingly in 2026 - being chosen, cited, and summarised by AI answer engines like ChatGPT, Perplexity, and Google's AI Overviews. Done well it compounds. Done poorly it's expensive theatre. This page shows every agency on AgencyIndex offering seo in London.

At a glance
  • 173 UK agencies offering seo in London
  • Part of the SEO service set
  • Indexed in London
  • Reviewed 17 May 2026
Showing 25-48 of 173 seo agencies in LondonAll SEO agencies
The SEO Works logo
The SEO Works
Independent·Sheffield·51-200 Employees·Verified

The SEO Works is a highly respected authority in search marketing, GEO, AI search, web development, and pay-per-click social services for distinguished brands and thriving SMEs in the UK. With a fifteen-year long track record, this agency remains committed to a single objective: boosting businesses' online customer base.

OmniFound logo
OmniFound
Independent·London·2-10 Employees·Verified

OmniFound is a forward-thinking SEO agency built for the evolving world of digital discovery. Based in Mill Hill, London, we specialise in helping brands grow across traditional search, AI-driven engines, and social platforms. Our services cover traditional SEO, AI SEO (GEO), Local SEO and SEO driven web design

Blackstone-media UK logo
Blackstone-media UK
Network·London·11-50 Employees·Verified

Black Stone Media is a UK-registered digital media agency that specializes in organic, asset-based marketing strategies, search engine optimization (SEO), localized copywriting, and social media growth. The firm is structured as an organic-first agency, meaning they focus on building long-term search authority and community presence rather than managing paid advertising campaigns or ad spend budgets. They act as a strategic and creative engine handling target market research, copywriting, app store optimization, social media strategy, and localized community outreach materials while collaborating with their clients' internal technical teams to deploy the work.

Crimson Social Marketing logo
Crimson Social Marketing
Independent·London·2-10 Employees·Verified

Crimson Social is a property-focused marketing agency helping estate agents, developers and property businesses grow through social media, paid advertising and digital marketing.

FirstMotion logo
FirstMotion
Independent·London·2-10 Employees·Verified

FirstMotion is a specialist AI search and GEO agency working with ambitious B2B software companies. We make sure ChatGPT, Google AI Overviews, Claude, Perplexity and Copilot recommend you by name when buyers ask for options in your category. We track your actual buyer prompts daily across every major AI platform, then act on what the data shows: content gaps, Reddit and review platform sentiment, entity signals and third-party citations. Senior specialists only, no juniors learning on your account, running as an extension of your team alongside traditional SEO and digital PR. Clients include Board Intelligence, Solve Intelligence, RELAYTO and Papaya.

Fourmeta logo
Fourmeta
Independent·London·11-50 Employees·Verified

Fourmeta Agency is an award-winning digital agency specializing in Shopify, ecommerce development, UX/UI design, branding, SaaS, AI product development, MVP development, mobile app development, and digital growth for ambitious brands worldwide.

Go Up logo
Go Up
Independent·London·11-50 Employees·Verified

Go Up is a multi award winning agency in London, specialising in AI SEO / GEO, SEO and Digital PR. Founded in 2011, we have one of the most experienced teams in London's search marketing industry and have worked on campaigns across the spectrum: from world renowned brands such as John Lewis, Hackett, AnyVan, Arsenal FC, Huel, Lawhive, JLL, Rapha Racing, Trip Drinks and Diageo, through to Governments and many start ups and SMEs. We have an outstanding track record of delivering results in competitive search landscapes, across Google organic search, ChatGPT, Claude, Gemini, Perplexity and Copilot.

Healthcare SEO logo
Healthcare SEO
Specialist·London·2-10 Employees·Verified

The Best Healthcare SEO Agency for Growing Private Clinics. Most SEO agencies treat medical websites like any other business. They don't understand Google's strict medical guidelines, patient search behaviour, or the compliance requirements that can make or break your rankings. You get a specialist team that knows exactly how patients search for private treatments, and more importantly, what makes them choose one clinic over another when they find you online.

LLM Listed logo
LLM Listed
Independent·London·11-50 Employees·Verified

Specialist Answer Engine Optimization agency helping brands become accurately understood, cited and recommended across ChatGPT, Claude, Gemini and Perplexity.

Lantern Comitas logo
Lantern Comitas
Independent·London·11-50 Employees·Verified

PR and Strategic Communications for Mining, Conservation and Corporations

Loose Connections logo
Loose Connections
Independent·Bournemouth·2-10 Employees·Verified

We are a Hampshire-based digital marketing agency with over 25 years of experience building websites and online strategies that drive genuine business growth.

NCO Digital logo
NCO Digital
Independent·London·2-10 Employees·Verified

NCO Digital is a boutique London SEO agency that works with ecommerce brands and beyond, covering everything from strategy, technical SEO, audits, and site migrations to content and AI search visibility.

NEXT Digital Agency logo
NEXT Digital Agency
Independent·London·2-10 Employees·Verified

The WordPress & Magento Marketing Agency NEXT Digital Agency is a full-service digital marketing agency specialising in WordPress websites, Magento 2 e-commerce, SEO, and PPC. We combine performance-driven marketing, thoughtful design, and reliable development to build online platforms that attract the right audience, convert better, and support long-term growth.

Nest Content logo
Nest Content
Independent·London·2-10 Employees·Verified

Nest Content is a UK SEO and AI search agency for service businesses. We run managed SEO, AI search visibility (GEO), content and citations, with a weekly report and a live dashboard on each client's own Search Console data. Founded by Robin Laires.

Overdrive Digital logo
Overdrive Digital
Independent·London·11-50 Employees·Verified

The B2B Growth Agency Predictable pipeline growth is a constant challenge for B2B marketing teams. It starts with better MQLs, stronger SQL conversion, and efficient customer acquisition. That’s where Overdrive comes in.

Pod Digital Marketing logo
Pod Digital Marketing
Specialist·Leicester·11-50 Employees·Verified

At Pod Digital, we’re a Digital Marketing Agency that’s passionate about helping businesses grow. We specialise in SEO, AI search optimisation, PPC and paid social, alongside web design, data insight and intelligent automation. We take pride in working alongside you to bring your business goals to life.

Prox Digital Agency London logo
Prox Digital Agency London
Specialist·London·11-50 Employees·Verified

Creative & Digital Growth Agency - London, UK Prox Digital Agency - Pros for growth is a London-based creative and digital growth partner for brands ready to scale with clarity. Founded by CEO Ali Zafar Azad, he leads the agency with a strategist's mindset, helping businesses that need more than just execution: they need direction. With 10+ years of experience and 500+ projects delivered worldwide

Sharkfold Ltd logo
Sharkfold Ltd
Independent·London·11-50 Employees·Verified

Marketing Agency in London To help your business grow, Sharkfold digital marketing company makes bold decisions. We provide tailored tactics to reach your target audience and achieve your business goals. Increase brand visibility, leads, and sales with our services. We strive to serve our clients well. We'll learn about your business and goals and utilize our knowledge to help you succeed. SEO, PP

The Game Marketer logo
The Game Marketer
Independent·London·11-50 Employees·Verified

The Game Marketer is an international full‑service video game marketing agency dedicated to helping developers, publishers, and game brands connect with players around the world. We specialise in crafting tailored marketing solutions that raise visibility, grow engaged communities, and drive real results across every stage of a game's lifecycle. Our team is made up of experienced marketing prof

Venice Digital Ltd logo
Venice Digital Ltd
Specialist·London·2-10 Employees·Verified

Venice is an independent London-based web agency specialising in ecommerce and business website design, development and growth on Shopify, Magento, WordPress and Wix.

Viorix digital solutions logo
Viorix digital solutions
Independent·London·2-10 Employees·Verified

Viorix Digital Solutions is a London web design agency helping startups and growing businesses build a stronger online presence. We design and develop bespoke websites and e-commerce stores that are fast, secure, user-friendly and built to perform. From UX and web development to launch, SEO and ongoing support, our experienced London-based team delivers a complete website design service tailored to your goals. Whether you need a new website, a full redesign or a custom online store, we create results-focused sites designed to attract more visitors, generate leads and help your business grow. Looking for a reliable website designer in London? Get in touch today.

YellowInk Digital logo
YellowInk Digital
Independent·London·2-10 Employees·Verified

YellowInk is an SEO and digital marketing agency based in the United Kingdom (UK), dedicated to helping startups and small businesses grow online. We offer tailored services including SEO, content marketing, PPC, email marketing, social media management, social media advertising, website design & development, and LinkedIn marketing. Our focus is on delivering affordable, effective strategies that

Yellowball logo
Yellowball
Specialist·London·11-50 Employees·Verified

London’s leading web design and development agency. We’re a hand-picked global team of exceptional designers, engineers, SEO experts and paid media specialists, crafting websites and digital experience that work as hard as you do. Ready to get your business rolling? Let’s chat!

Webskitters logo
Webskitters
Independent·London·201-500 Employees

Recognised worldwide, Webskitters LTD is an award-winning company, excelling in web and app design/development, alongside digital marketing. Our specialisation in these areas sets us apart, providing unparalleled services in web design and development. Our proficiency and the innovative integration of cutting-edge technologies cater to a diverse global clientele. Founded in 2010, Webskitters has e

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Editor's note

AgencyIndex tracks 173 seo agencies in London. The list above is filtered to that intersection and ordered with verified and featured listings first.

For the wider editor's view on seo agencies in the UK, see the seo service brief. For context on London's marketing cluster, see the London location brief. The pricing, timeline and red-flag notes below apply to seo as a discipline; they do not change materially in London.

Typical cost
£500-20,000+
per month, retainer

Boutique / freelance £500-3,000 · Mid-market £1,500-7,500 · Network £7,500-20,000+. One-off audits £1,500-10,000.

Realistic timeline
3-12 months
to compounding results

1-3mo technical foundations · 3-6mo ranking and traffic gains · 6-12mo+ revenue compounding.

Red flags
5 to watch
in any pitch
  • · Guaranteed rankings or 'top 3 in 30 days' promises
  • · Pure performance-based pricing (misaligns incentives)
  • · Aggressive link building or 'private networks' (PBNs)
  • · Vague reporting that won't connect to revenue
  • · No request for Search Console + analytics access
Frequently asked

What brands ask about seo agencies.

The 5 questions our editors get most often, answered honestly. These apply to seo as a discipline regardless of city.

Curated by humans

UK SEO retainers in 2026 split into three tiers: boutique consultants and small specialist shops run £500-3,000 a month, mid-market agencies £1,500-7,500, and network or holding-group shops £7,500-20,000+. One-off audits land between £1,500 and £10,000 depending on site complexity. Pure performance-based pricing exists but tends to misalign incentives - Google Search Central itself warns against providers leaning on guarantees rather than process.