864 agencies indexed·Latest entry: 28 August 2026
Service · 507 agencies

SEO agencies.

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.

At a glance
  • 507 UK agencies offering seo
  • Across 41 UK locations
  • Reviewed 17 May 2026
Showing 433-456 of 507 seo agenciesView in full archive
Sister London logo
Sister London
Independent·London·11-50 Employees

Sister London is a London-based comprehensive marketing agency, renowned for its unique fusion of strategic insight and engaging content to craft campaigns that defy conventions. With a specialisation in digital marketing, PR, events, and design, Sister London injects a creative and innovative approach into the spheres of destination, food, and lifestyle brands on a worldwide scale.

Empower Agency logo
Empower Agency
Independent·London·11-50 Employees

Empower Agency, a London-based strategic digital partner, excels in fostering causes that generate positive influence. Recognised as a certified B Corp, Empower distinguishes itself by amalgamating research, insight, and strategy to devise innovative and persuasive digital campaigns that champion significant transformation. They concentrate on empowering teams and captivating audiences by offering

OnBrand logo
OnBrand
Independent·London·11-50 Employees

Based in Hertfordshire, OnBrand is a comprehensive marketing agency with a specialism in business expansion. What distinguishes OnBrand is its unwavering commitment to aid companies at critical junctures, whether it's facilitating small businesses' shift to e-commerce or empowering larger firms to improve their customer journey with digital and audio marketing strategies. Boasting a wide range of

Croud logo
Croud
Network·London·201-500 Employees

Centrally located in London, Croud is a comprehensive media agency that also operates from additional bases in Shrewsbury, New York, Atlanta, and Dubai. Croud distinguishes itself with a robust commitment to performance-oriented expansion and innovation, capitalising on a profound legacy in analytics, strategic planning, and strategy to ensure enduring success for aspirational worldwide brands. Th

Loop Digital logo
Loop Digital
Independent·Northampton·11-50 Employees

Loop Digital, a Northampton-based digital marketing firm, excels in providing bespoke digital marketing strategies. Our speciality lies in empowering small to medium enterprises (SMEs) with measurable growth and enduring success through our array of services, including SEO, web design, and conversion rate optimisation. Our distinctive trait is our dedication to building enduring client relationshi

Figment Agency logo
Figment Agency
Independent·London·11-50 Employees

Figment Agency, a celebrated SEO agency residing in London, specialises in crafting streamlined and potent SEO strategies. With a distinctive focus on the healthcare and professional services sectors, Figment is dedicated to helping businesses attain consistent growth by linking them with their perfect clients via online channels. Their bespoke strategy, which incorporates their trademarked Search

Elixirr Digital logo
Elixirr Digital
Independent·Essex·51-200 Employees

As a globally recognised, multi-award-winning digital marketing and IT agency, Elixirr Digital, part of the overarching Elixirr Group, uniquely merges iOLAP's expert services to deliver bespoke, data-driven digital marketing solutions. Our commitment to driving quantifiable results for every client sets us apart. Specialising in comprehensive web design and development, we pride ourselves on our i

Candy Marketing logo
Candy Marketing
Independent·Liverpool·2-10 Employees

Candy Marketing, a premier digital marketing firm situated in the UK, operates out of Manchester and Liverpool. The agency sets itself apart with its celebrated digital tactics that augment online visibility via intelligent design, development, and sector-specific knowledge. Excelling in crafting immersive customer experiences, Candy Marketing delivers superior UX/UI design, smooth website develop

Mediahub logo
Mediahub
Network·London·1000+ Employees

Mediahub, a London-based agency, specialises in strategic media planning and buying, merging human insight with data-led strategies. Their core services encompass the creation of media strategies, cross-channel media procurement, and bespoke advertising solutions, customised to align with each client's unique requirements. What sets Mediahub apart is their emphasis on integrating human expertise w

Caffeine Marketing logo
Caffeine Marketing
Independent·Cardiff·2-10 Employees

Caffeine Marketing, a renowned full-service digital marketing firm based in Cardiff, provides comprehensive UK-wide coverage. Our unique selling proposition is our practical approach to facilitating remarkable online triumphs through bespoke digital marketing strategies, tailored to every client's distinct requirements. Since our inception in 2011, we've maintained a consistent performance record.

M3.Agency logo
M3.Agency
Independent·Birmingham·11-50 Employees

M3.agency is a renowned marketing agency headquartered in Birmingham, further known for its strategic offices located in London and Albrighton. Recognised for its pioneering marketing strategies, M3.agency recently made waves with the successful roll-out of their cutting-edge MG3 Hybrid+ campaign, embodying the spirit of contemporary marketing approaches. Specialising in the creation of bespoke, e

Ink Digital logo
Ink Digital
Independent·London·2-10 Employees

Ink Digital, a versatile SEO and digital marketing agency, is located in the heart of London. Uniquely, we provide customised strategies for every client, guaranteeing optimal return on investment via personalised SEO, PPC, web design, digital PR campaigns, among others. Our strength lies in our commitment to incorporating data-driven insights and current industry trends, ensuring we deliver excep

Fit Design logo
Fit Design
Independent·London·2-10 Employees

Our London-based, award-winning agency is a leading expert in bespoke web design. We specialise in creating innovative, mobile-optimised websites, setting ourselves apart with our commitment to engaging user experiences and customised eCommerce solutions. We utilise Swiss-style design to cater to our clients' unique requirements. Well-regarded for a wide array of digital marketing services, we shi

Lightflows logo
Lightflows
Independent·London·11-50 Employees

Lightflows, a premier digital agency operating from Guildford, Surrey and Southbank, London, is distinguished for their proficiency in web design, development, and bespoke app creation. As a frontrunner in delivering customised digital solutions, Lightflows caters to both well-established enterprises and funded startups, driving them towards digital triumph. Their dedication towards harnessing con

CEEK Marketing logo
CEEK Marketing
Independent·London·11-50 Employees

CEEK, a London-based digital marketing firm, stands out in the crowded market with its unique OCMX methodology and E-Matrix™ strategy. Specialising in bespoke marketing insights and strategies, CEEK significantly enhances the ROI for every client. With a strong emphasis on innovation and data-led decisions, CEEK provides a holistic range of services: from social media and SEO marketing, to paid me

Articulate Marketing logo
Articulate Marketing
Independent·London·11-50 Employees

Articulate Marketing, a top-tier digital marketing agency headquartered in the UK, excels in delivering specialised services to B2B technology firms. Their distinctive feature is their exclusive Difference Engine® framework, honed to champion brand differentiation and strategic marketing to fuel growth and cultivate superior quality leads. As a certified HubSpot Diamond Partner, Articulate Marketi

Artemis Marketing logo
Artemis Marketing
Independent·Brighton·11-50 Employees

Artemis Marketing, a premier digital marketing agency nestled in Hurstpierpoint, West Sussex, excels in providing bespoke SEO and digital marketing solutions, specifically tailored for SMEs and eCommerce enterprises. Renowned for our dedication to transparency and personalised strategies, we bring more than two decades of industry expertise to the table. Our unique methodology involves an in-depth

Top Notch Dezigns logo
Top Notch Dezigns
Independent·London·11-50 Employees

Top Notch Dezigns, a distinguished web design and digital marketing agency, is headquartered in London. This agency specialises in crafting innovative and visually captivating web designs that significantly improve conversion rates and yield quantifiable outcomes. Furthermore, Top Notch Dezigns stands out in devising cross-platform web and mobile applications and utilises a performance-oriented di

Adtrak logo
Adtrak
Independent·Nottingham·51-200 Employees

Adtrak, a Nottingham-based design and marketing agency, specialises in delivering smart, results-oriented marketing solutions for businesses throughout the UK. Our unique selling point is our unwavering dedication to client success, achieved through a personalised and cooperative approach. Our suite of services includes web design, branding, SEO, and PPC, all aimed at unlocking your digital potent

KIJO logo
KIJO
Independent·Birmingham·11-50 Employees

KIJO, a pioneering web design agency nestled in Birmingham, was established by a duo of brothers as a family-run enterprise. The agency stands out for its unique pledge to collaborate solely with businesses that mirror their core values, guaranteeing significantly influential partnerships. By expertly fusing design, technology, and performance, KIJO differentiates itself, delivering outstanding ou

Reboot Online logo
Reboot Online
Independent·London·11-50 Employees

Reboot Online pioneers a unique approach in digital marketing, blending inventive creativity with technical mastery. Founded in 2006, at the dawn of SEO, Reboot Online consistently investigates potent strategies. Significantly, the firm's experimental SEO techniques have shaped the way global entities and agencies optimise their websites, earning acclaim from industry forerunners. Moreover, Reboot

Medico Digital logo
Medico Digital
Specialist·London·2-10 Employees

Medico Digital, a London-based healthcare marketing firm, excels in linking individuals to superior health outcomes via pioneering digital tactics. This agency stands out for its unique blend of data-informed insights and creative content marketing, which bolsters online presence and effectively engages targeted demographics. Specialising in transforming intricate medical data into comprehensible

Tillison Consulting logo
Tillison Consulting
Independent·Portsmouth·2-10 Employees

Searching for a marketing agency that can flawlessly merge with your team? Tillison Consulting stands ready to help. A veteran player within the marketing sector, Tillison Consulting works closely with you to identify the most potent strategies, customised to align with your immediate and long-range business goals. Renowned for its straightforward approach, Tillison Consulting takes the initiative

Rebellion Marketing logo
Rebellion Marketing
Independent·Portsmouth·2-10 Employees

Rebellion Marketing, a comprehensive digital marketing agency hailing from Hampshire, UK, prides itself on its unique approach. It stands out through its dedication to clear, effective strategies with a results-focused ethos, offered with complete transparency. This allows clients to venture into their digital marketing voyage with confidence. Boasting a team of more than 10 experienced marketers,

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Editor's note
The UK has roughly 476 agencies that put SEO at the top of their service list. They split into three buckets: boutique consultants and small specialist shops charging £500-3,000 a month; mid-market agencies running fuller programmes at £1,500-7,500; and network or holding-group agencies billing £7,500-20,000 and up for enterprise work. In 2026 the discipline has expanded. Traditional ranking optimisation still matters - Google Search Central is clear that crawlability, helpful content, and trust signals carry the same weight as they always did. But visibility now also means being cited in AI Overviews and surfaced by ChatGPT and Perplexity. Most credible UK agencies are quietly absorbing this as Generative Engine Optimization (GEO) without making it a separate service line. A few are loud about it. Watch for which.
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.

5 questions our editors get most often, answered honestly. No agency-marketing speak.

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.