Top SEO Companies in London (28)
Yext (NYSE: YEXT) is the enterprise agentic marketing platform. Built on the world's most comprehensive structured data platform for local businesses, Yext gives brands and their partners the visibility intelligence to win every moment of discovery – across AI and traditional search. Yext's API-first architecture connects structured data to APIs, MCP servers, and generative interfaces, so partners and developers can...
Yext's Top Stability & Growth Strengths
Profitability: Net income turned from -$27.9M in FY2025 to +$37.9M in FY2026, and adjusted EBITDA rose from $67.0M to $107.3M with margin expansion. Profitability continued into FY2027 with strong quarterly EBITDA performance.
Cost & Operational Efficiency: Operating discipline, restructuring, and reduced expenses are credited with materially improving margins and earnings despite muted top-line trends. The business has shifted from loss-making expansion to efficiency and margin expansion.
Future-Ready Strategy: Product investments and positioning around AI/agentic marketing (e.g., Scout, Corvo AI) and targeted acquisitions (e.g., Hearsay) indicate a pivot toward AI-driven search visibility and regulated-industry use cases. This suggests preparation for evolving demand rather than reliance solely on legacy listings revenue.
At Havas People, we help organizations attract, engage and retain talent by creating meaningful employer brands and talent experiences. We're a global employer branding, talent communications and recruitment marketing agency within Havas, one of the world's largest communications groups. While many agencies focus on products, consumers or corporate audiences, we specialize in one thing: people. Our work spans the entire employee lifecycle,...
The Good Marketer is a Digital Marketing Agency based in London which works with SMEs; helping them grow, expand and reach new heights in the digital space. As a small business ourselves, we understand that yours is your baby - your pride and joy. That’s why we make it our mission to take on your vision for the future and...
Founded in 2015, Idiosys Tech is a premier provider of comprehensive digital solutions, specializing in web development, mobile app development, e-commerce development, digital marketing, SEO, and social media marketing services for global clients. Our team of experts is proficient in cutting-edge technologies such as React, Node.js, MongoDB, Angular.js, Laravel, WordPress, YII, and CodeIgniter, enabling us to deliver innovative and effective...
Our mission is simple: to empower businesses of all sizes to thrive in the digital era. Whether you’re a startup or an established brand, we tailor our services to meet your unique needs. From cutting-edge web development to seamless user experiences and digital marketing strategies that convert, we’ve got you covered. Join hands with RVS Media and unlock the full potential...
Gramercy Global Media Inc. is a global full-service digital marketing and web design agency that helps brands build a strong online presence and increase sales. They provide comprehensive services including SEM, SEO, social media marketing, and custom website design, with a particular focus on the sports and entertainment vertical. The agency operates internationally with offices in New York, London, Berlin,...
Cheetah Conversions is a performance marketing agency specializing in Paid, CRO, and SEO services. They help B2B and B2C businesses across Europe, North America, Australia, New Zealand, and the Middle East maximize the impact of multi-channel advertising on platforms like Google, LinkedIn, Facebook, Instagram, and YouTube, with a focus on data-driven results and lead generation.
JBi Digital is a London-based digital transformation agency specializing in creative and technical solutions. They provide user-focused, results-driven strategy and implementation, delivering high-quality digital design and development for global brands, public sector bodies, and charities. Their expertise spans web design, app development, and SEO, helping organizations navigate complex digital challenges to achieve measurable results and long-term growth.
Botify’s leading agentic AI search technology and seasoned experts ensure every brand has the power to be found, both in traditional and AI search. With one powerful platform, brands achieve visibility, relevance, and greater control across Google, Bing, ChatGPT, Perplexity, and more. Botify’s technology powers agentic workflows, AI-driven recommendations, and automated cross-platform indexation and deployment. Brands maximize visibility wherever consumers, bots,...
Botify's Top Stability & Growth Strengths
Innovation-Driven Growth: Recent launches such as AI Visibility and Agentic Feeds and a pivot into Generative Engine Optimization reflect active advancement in AI-integrated SEO. Independent recognition for AI-integrated SEO, automation, and forecasting in Forrester’s 2025 evaluation aligns with this trajectory.
Product Line Growth: The offering has expanded beyond traditional SEO with 2026 additions like AI Visibility and Agentic Feeds targeting AI search visibility and agentic commerce. These additions broaden the platform’s scope for large, technically complex sites.
Strong Market Position & Advantage: Presence with more than 500 enterprise customers, including brands such as Etsy, Crocs, Macy’s, and Levi’s, indicates solid traction in enterprise SEO. Recognition as a Strong Performer in The Forrester Wave Q3 2025 with top scores in multiple criteria supports a credible standing as a top-tier specialist.
AdCellerant provides businesses access to high-quality digital marketing technology and solutions through partnerships with media companies and agencies. Focused on generating results and growth for businesses of all sizes, AdCellerant offers best-in-class technology and software, award-winning customer service, expert education, and exceptional operational support to ensure campaign performance for customers. Leveraging proprietary technology UI.Marketing, AdCellerant effectively connects businesses with their ideal...
AdCellerant's Top Stability & Growth Strengths
Strong Revenue Growth: Multi‑year inclusion on national growth lists and repeated acknowledgments of sustained expansion indicate durable top‑line momentum. Company updates also reference continued scaling in both revenue and headcount.
Market Expansion: International moves into Canada and the UK alongside activity across hundreds of markets reflect a widening geographic footprint. Partnerships and integrations, such as with Yext, further extend reach into enterprise and local‑media ecosystems.
Strong Market Position & Advantage: Ranking as the largest advertising agency in Denver and being highlighted as a leader within its white‑label media‑partner niche underscore a defensible position. Operating as a go‑to partner for local media companies and agencies reinforces differentiation versus broader, general‑purpose ad‑tech platforms.
Webtonic is a global performance marketing agency helping brands grow through a full spectrum of digital acquisition services. We work with companies of all sizes in e commerce, SaaS, B2B and local services to improve visibility, increase qualified traffic and scale revenue through data driven strategies. Our services include SEO, Google Ads, Meta Ads, TikTok Ads, Amazon Ads, Reddit Ads and...
We’ve brought together a passionate team of digital marketing specialists at Absolute. Collectively known as the A-Team, we provide integrated solutions for driving business growth. We’re your go-to experts, who are dedicated to adapting to your unique needs and becoming an extension of your business. Fuelled by a passion for learning and innovation, we continuously challenge the status quo to...
Callbox is a B2B lead generation and appointment setting company helping businesses build qualified pipeline, connect with decision-makers, and create sales opportunities. Founded in 2004, Callbox combines dedicated sales development teams, AI-powered outreach, data intelligence, and multi-channel engagement to support companies from prospecting through qualified meeting handoff. Our core services include B2B lead generation, appointment setting, account-based marketing (ABM), outsourced SDR...
Elevate Group focuses on building a brand that people know, like, and trust, with a Marketing Campaign Manager handling day-to-day marketing logistics.
Backed by talented professionals and their expertise, we deliver dependable services in web development, app development, software creation, and digital transformation.
Operating across North America, EMEA, LATAM and APAC, iCrossing helps clients win demand, convert demand and scale performance through AI and search discoverability, media and acquisition, content and experience, digital commerce and platforms, and data-driven operations. Our integrated model combines strategic direction, execution and technology to improve near-term marketing performance while building the digital foundations required for sustainable growth.
FBSPL is an ITES and BPM company founded in 2006. We provide business process management and IT service delivery solutions to businesses worldwide. Aptly named, Fusion brings together different cultures, ideas, technology, innovation, and ethnicities to impact how businesses operate. Keeping U first is its mantra, and it is equally applied to FBSPL's team members, partners, clients, and service providers. Through its...
Bold x Collective is an award-winning growth marketing and creative agency headquartered in Toronto (Vaughan), working with brands across Toronto, New York, Miami, Los Angeles and London. Most agencies plan the work or make the work. We do both. Strategy, creative and performance sit under one team, so the people shaping the strategy are in the same room as the people...
Mentor Digital is an established, full-service digital agency based in Bristol & London. We are proud to be the largest Umbraco Gold Partner agency in the South West! Recently listed in the South West's top 25 digital agencies by turnover, Mentor's award winning in-house team delivers a market leading range of services including project leadership, web design & development, usability...
SEO25 helps businesses grow their online presence through data-driven SEO, targeted website traffic, and digital analytics. We focus on attracting real visitors, improving engagement, and building sustainable visibility using ethical, measurable strategies designed for long-term success.





























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