The best Advertising agencies in London
Choose from the 25 agencies selected and listed below
The ranking
25agencies in London15postal codes7 000 €median budget across 1 projects
1. Growth Division
Advertising agency in London, specialised in Growth Marketing
Growth Division : team of 25 people, founded in 2020.
Growth Division is a growth marketing agency for startups, scale-ups and ambitious SMEs - expert-led and powered by GREX AI, our AI growth platform. Trusted by 130+ high-growth businesses and rated 4.7 on Clutch across 31 reviews. We use the Bullseye Framework to prioritise the channels most likely to work for your stage and market, then run structured, ICE-scored growth experiments to prove what scales - so you can grow customer acquisition while holding an agreed cost per acquisition. You ge
A client« Growth Division a considérablement réduit notre coût par lead sur Google Ads et multiplié par trois nos inscriptions quotidiennes. Leur stratégie marketing personnalisée et attentionnée a réellement fait la différence pour notre entreprise. »
Expertises · Growth Marketing, CRM, SEO, Content Marketing, Social Media · Clients · Startups (early stage), Scale-ups, PME
2. December19
Advertising agency in London, specialised in Media
December19 : team of 25 people, founded in 2010.
December19 is an independent, B Corp certified media planning and buying agency specialising in B2B organisations. We combine strategic rigour with complete financial transparency. No rebates, no kickbacks, no AVBs. Expert in paid social, paid search, and Google Ad Grants. IPA CPD Platinum accredited. IAB Gold Standard certified.
Expertises · Media, Advertising, Marketing · Clients · Scale-ups, PME, ETI
3. Pearl Lemon
Advertising agency in London, active since 2016
Pearl Lemon : team of 50 people, founded in 2016, office in London (EC1V 2NX).
Overview Pearl Lemon is an SEO agency based in London. The agency offers to increase organic traffic and leads for businesses, highlighting a specific process for generating inbound leads. Its interventions are framed within a perspective of measurable growth, with a stated commitment over a 120-day period. The agency has been mentioned in various publications, including Forbes, BBC, and Entrepreneur. For more information, visit http://pearllemon.com. Services and expertise Search engine optimisation Pearl Lemon offers SEO optimisation services aimed at increasing organic traffic. The…
4. Greenwich Design
Advertising agency in London
Greenwich Design : team of 10 people, office in London (SE10 9NE).
Greenwich Design specializes in brand identity design, packaging, and web development. They focus on creating impactful brands for businesses across various sectors.
5. Vitamin London
Advertising agency in London
Vitamin London : team of 16 people, office in London.
Vitamin London is a digital agency based in Westminster, UK. They specialise in various services including digital strategy, web development, and branding.

6. Wednesday
Advertising agency in London
Wednesday : team of 56 people, office in London (SE1 0SW).
Wednesday is a marketing agency based in London, specialising in advertising and promotional services. They have worked with various clients across industries, including banking and travel, focusing on branding and communication strategies.
7. MC+Co
Advertising agency in London
MC+Co : team of 42 people, office in London.
Overview MC+Co is a digital marketing agency based in Essex and London. The agency works with local, national and international clients to transform their marketing strategy and optimise return on investment. It offers a comprehensive range of integrated marketing services covering traditional and digital channels, from strategic advice to creative execution. For more information, visit https://mcandco.co.uk. Services and expertise Strategy and planning The agency develops insightful marketing strategies aligned with clients' business objectives. These strategies form the foundation for all…

8. MagiClick Digital
Advertising agency in London, active since 1996
MagiClick Digital : team of 4 people, founded in 1996, office in London (EC3A 2AD).
MagiClick Digital is a digital technology and design services provider, offering a range of interactive technology, design, and marketing services. Founded in 1996, it has been recognised as a leading agency in its field, winning several awards, including ten Deloitte Fast 50 awards.
9. Kolab Digital
Advertising agency in London
Kolab Digital : team of 2 people, office in London (EC1N 8AT).
Kolab Digital is a creative agency based in London, focused on helping clients establish emotional connections through their work. Their services encompass various areas including branding, digital strategy, social media management, and communications planning, all backed by research and insights.

10. Langland
Advertising agency in London
Langland : team of 299 people, office in London.
Overview Langland is an agency bringing together more than 240 experts, founded on the conviction that diversity of perspectives strengthens the quality of work. The agency structures its approach around the concept "THINK FURTHER", based on collaboration between specialist teams and clients with complementary visions. Based in London, New York and Sydney, the agency operates primarily in the healthcare industry, where it develops solutions combining clinical expertise and strategic creativity to transform complex challenges into meaningful experiences. Services and expertise Clinical Trial…
11. Gloam
Advertising agency in London, active since 2020
Gloam : team of 2 people, founded in 2020, office in London (N4 2AZ).
Overview Gloam is an augmented reality agency specialising in creating AR filters for brands and agencies across the UK, US and internationally. The agency has over 120 branded AR campaigns to its name, deployed across major social platforms and the web. It works with major clients including Google, LEGO, NBA, Beats by Dre, Gorillaz, FIFA, ESPN and Meta, delivering interactive digital experiences tailored to global marketing strategies. Services and expertise Instagram AR filters Gloam designs and deploys augmented reality filters for the Instagram platform, integrating visual and…
12. Cuberto
Advertising agency in London
Cuberto : team of 12 people, office in London (W1T 1DG).
About us Cuberto is a design and digital development agency founded in 2010. The company supports organisations in creating scalable digital products by combining thoughtful design systems with carefully executed development. Cuberto refuses generic solutions and is committed to building products exactly as envisioned during the design phase, without compromise or simplification. The agency covers the entire spectrum, from brand design to artificial intelligence integration, including frontend and backend development. Services and expertise Brand Identity Cuberto offers brand identity…

13. Velvet PR
Advertising agency in London
Velvet PR : team of 10 people, office in London (N17 9QU).
Velvet PR provides public relations consultancy, specializing in telling compelling stories and sharing news for various clients. They focus on effective communication strategies to enhance brand visibility and engagement.
14. Pufferr Ltd
Advertising agency in London
Pufferr Ltd : team of 1 person, office in London.
Pufferr Ltd is a digital marketing agency based in Greater London, specialising in brand consultancy, SEO, paid advertising, social ads, programmatic advertising, and more. The agency focuses on driving growth for brands through its innovative marketing services.
15. aistrikeforce
Advertising agency in London
aistrikeforce : team of 5 people, office in London (EC2A 2EX).
aistrikeforce is an agency based in London, specialising in artificial intelligence tools designed to enhance business efficiency. They focus on automating processes to help businesses save time and increase customer engagement.
16. Saatchi & Saatchi
Advertising agency in London, active since 1970
Saatchi & Saatchi : team of 401 people, founded in 1970, office in London (WC2A 1JA).
Presentation Saatchi & Saatchi is a UK-based creative agency operating under the motto "Nothing is impossible". The agency develops campaigns for major clients in the British industry, covering brand communication, social initiatives and digital strategies. Its portfolio includes work for organisations such as British Heart Foundation, John Lewis, EE and London Sport, combining visual creativity, brand strategy and cultural activation. More information available at https://www.saatchi.co.uk. Services and expertise Advertising creation The agency designs integrated advertising campaigns,…

17. Brass
Advertising agency in London, active since 1983
Brass : team of 129 people, founded in 1983, office in London (W1A 1AB).
Brass is an independent full-service marketing agency based in Leeds, United Kingdom, with over 30 years of experience in consumer marketing. The agency combines expertise in digital strategies with traditional advertising and branding, serving prominent UK and global brands.
18. Digital Dynamix LLP
Advertising agency in London
Digital Dynamix LLP : team of 31 people, office in London.
Overview Digital Dynamix operates an NFT marketplace platform dedicated to trading and revenue generation. The ecosystem is built on a model that fuses digital assets and distributes monthly rewards. Users can acquire base NFTs, add specific traits to create merged versions, and participate in a transaction-based royalties system. The platform currently manages 8 distinct collections and integrates a vault mechanism designed to centralise the value generated by ecosystem activities. Services and expertise NFT Marketplace Platform enabling the purchase and sale of base NFTs and individual…

19. RADIUS London
Advertising agency in London
RADIUS London : team of 35 people, office in London.
RADIUS London is a marketing agency based in the City of Westminster, United Kingdom. They specialise in advertising and have worked with notable clients across various industries including energy and aerospace.
20. Art Division
Advertising agency in London, active since 2001
Art Division : team of 12 people, founded in 2001, office in London (SW19 5EE).
Overview Art Division is an agency specialising in website design and digital marketing for real estate professionals and related sectors. The agency offers tailored solutions for varied segments: estate agencies, lettings agencies, commercial agents, builders, property developers, professional service providers and PropTech companies. Its offering combines web design, search engine optimisation and digital marketing strategies, with a focus on lead generation and conversion. For more information, visit https://artdivision.co.uk. Services and expertise Website design Art Division designs…
21. Improving Ads Ltd.
Advertising agency in London
Improving Ads Ltd. : team of 6 people, office in London (SE1 7SP).
Improving Ads Ltd. is a London-based agency specialises in SEO and online advertising. The agency focuses on helping businesses enhance their online presence and marketing strategies.
22. Creativebrief
Advertising agency in London, active since 2002
Creativebrief : team of 15 people, founded in 2002, office in London.
Overview Creativebrief is an agency selection advisory platform and intelligence hub designed for brands seeking marketing transformation. The service combines support in finding creative agencies with access to sector-specific content and insights. The platform serves ambitious brands looking to accelerate their marketing impact, as well as agencies keen to grow their business through a modern route to market. The hub regularly offers analyses, interviews and case studies in the field of creative and marketing. For more information: https://www.creativebrief.com Services and…
23. Banner Squad
Advertising agency in London, active since 2018
Banner Squad : team of 5 people, founded in 2018, office in London (N1 9EZ).
About us Banner Squad is a creative production studio specialising in large-scale digital advertising creation. The agency works across HTML5 display formats, digital out-of-home advertising (DOOH) and social network ads. It positions its offering around production capacity, speed of execution and reliability in delivering multi-format, multi-platform campaigns. Banner Squad collaborates with advertisers and agencies to integrate teams that need speed, consistency and reliable deliverables. For more information, visit https://www.bannersquad.com. Services and expertise HTML5 ads Creation of…

24. Infectious Media
Advertising agency in London
Infectious Media : team of 792 people, office in London (EC1R 5EJ).
Infectious Media is a digital advertising agency based in London, UK, specialising in various aspects of online marketing and advertising. They provide solutions tailored to individual customer needs to maximise digital ad effectiveness in a competitive landscape.

25. Positive10
Advertising agency in London
Positive10 : team of 6 people, office in London.
Positive10 offers digital consulting services focused on search marketing, eCommerce, and web development. The agency has a small team dedicated to providing comprehensive digital solutions for businesses.
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