Hiring the right advertising agency can have a significant impact on your business. From boosting brand visibility to creating compelling marketing strategies, these agencies bring expertise and creativity that can help your company stand out in a crowded market.
To help you find the best fit for your business, we’ve conducted extensive research, ranking the top advertising agencies based on customer reviews and website traffic. Our list highlights agencies that excel in creativity, client satisfaction, and delivering measurable results.
1. Munro Agency
The Munro Agency is a digital marketing firm specializing in marketing automation, website design and development, SEO, PPC advertising, social media marketing, and B2B lead generation. They focus on delivering tailored marketing solutions to help businesses enhance their online presence and generate quality leads.
Office Location: Glasgow, United Kingdom
Year Founded: 2015
Team Size: 2–10 employees
Key Services: Marketing automation, website design and development, SEO, PPC advertising, social media marketing, B2B lead generation
Industries Served: Various industries including technology, software, hospitality, HR
Case Studies: View all case studies
2. WPP plc
WPP is a global leader in marketing services, encompassing advertising, public relations, media investment management, and data analytics. The agency operates through a network of renowned agencies, including AKQA, Ogilvy, Grey, Mindshare, and VML. The company leverages its extensive creative talent and technological capabilities to deliver innovative solutions for clients worldwide.
Office Location: London, United Kingdom
Year Founded: 1971
Team Size: Over 100,000 employees
Key Services: Advertising, Public Relations, Media Investment Management, Data Analytics, Brand Consulting, Digital Marketing, Health and Wellness Communications
Industries Served: Various sectors including Consumer Goods, Healthcare, Technology, Automotive, and Retail
Case Studies: View all case studies
3. Ogilvy UK
Ogilvy UK is a modern, global creative communications agency designed to operate at the intersection of brand reputation and cultural relevance. They offer services in corporate, consumer, culture, tech, brand, internal, social, content, and influence, backed by strategic and creative talent.
Office Location: London, England​
Year Founded: 1850​
Team Size: Part of a global network with over 120 offices
Key Services: Corporate communications, consumer engagement, cultural strategy, technology solutions, brand management, internal communications, social media, content creation, influencer marketing
Industries Served: Multiple industries including healthcare, technology, and consumer goods
Case Studies: View all case studies
Socially Powerful is a global social media and influencer marketing agency founded in 2017. They specialise in simplifying the complexities of social media platforms, influencer marketing, paid social, and advertising. Their services include influencer marketing, paid social advertising, social strategy, and more. They have worked with prestigious brands such as TikTok, IT Cosmetics, and L’Oréal.
Office Location: London, England
Year Founded: 2017
Team Size: 51-200 employees
Key Services:Â Influencer marketing, social media management, content production, paid media
Industries Served: Various sectors including fashion, technology, and lifestyle
Case Studies: View all case studies
5. BBH Global
BBH Global is a full-service creative agency known for its transformative brand strategies and innovative advertising campaigns. They focus on delivering enduring growth for brands through creativity and effectiveness. The agency is celebrated for its innovative and impactful campaigns, including the iconic “Vorsprung durch Technik” for Audi and “The Lynx Effect” for Unilever.
Office Location: London, England
Year Founded: 1982
Team Size: 501-1,000 employees
Key Services: Brand strategy, creative development, digital marketing, content creation
Industries Served: Various sectors including automotive, consumer goods, and technology
Case Studies: View all case studies
6. RTB House
RTB House is a Polish advertising technology company specialising in targeted advertising, retargeting and real-time bidding strategies. Headquartered in Poland, the company has expanded its presence with over 30 offices worldwide. They develop a demand-side platform to provide autonomous personalised marketing services.
Office Location: Warsaw, Poland
Year Founded: 2012
Team Size: 501-1,000 employees
Key Services: Retargeting, personalised advertising, deep learning algorithms
Industries Served: E-commerce, travel, finance
Case Studies: View all case studies
Hogarth Worldwide is a global creative content production company that integrates human craftsmanship with technology to deliver seamless content experiences across creative, commerce, and media sectors. As part of the WPP network, the company collaborates with numerous renowned brands, including Coca-Cola, Ford, Rolex, Nestlé, Mondelez, and Dyson.
Office Location: London, England
Year Founded: 2008
Team Size: Approximately 4,000 employees
Key Services: Creative production, content adaptation, media implementation, technology solutions
Industries Served: Various sectors including retail, automotive, and healthcare
Case Studies: View all case studies
8. M&C Saatchi
M&C Saatchi Group is an international communications company formed in 1995. It operates through an integrated model harnessing a dynamic ecosystem of specialist agencies and exceptional talent, offering expertise in brand strategy, data and analytics, advertising, digital innovation, design, PR, sports and entertainment, and more.
Office Location: London, England
Year Founded: 1995​
Team Size: Over 2,400 employees
Key Services: Brand strategy, data and analytics, advertising, digital innovation, design, PR, sports and entertainment, social advocacy, talent and influencer marketing, customer experience, media
Industries Served: Various sectors including consumer goods, technology, and entertainment
Case Studies:Â View all case studies
9. Havas London
Havas London is a comprehensive communications agency offering creative, media, and healthcare services under one roof. Their integrated approach allows them to build teams tailored to client needs, ensuring seamless collaboration across disciplines. The agency’s mission is to make a meaningful difference to the brands, businesses, and lives of the people they work with.
Office Location: London, United Kingdom
Year Founded: 2003
Team Size: Approximately 190 employees
Key Services: Creative services, media planning and buying, healthcare communications, public relations, social media management, content creation, digital marketing, customer experience design
Industries Served: Healthcare, consumer goods, technology, automotive, finance, entertainment
Case Studies: View all case studies
10. Five by Five
Five by Five is a creative marketing and advertising agency specializing in product launches. With decades of experience, they focus on delivering impactful advertising, digital strategy, branding, content marketing, and public relations services to ensure successful market entries for their clients.
Office Location: Southampton, England
Year Founded: 1979​
Team Size: 51-200 employees
Key Services: Advertising, digital strategy, branding, content marketing, public relations
Industries Served: Diverse sectors including technology, consumer goods, and healthcare
Case Studies: View all case studies
11. ROAST
ROAST is a performance media agency based in London, specialising in digital marketing services aimed at enhancing clients’ return on advertising spend. Established in 2015, ROAST has built a reputation for delivering data-driven strategies across various channels. The agency also offers services in radio and audio, out-of-home, TV, and press media.
Office Location: London, England
Year Founded: 2015​
Team Size: 51-200 employees
Key Services: SEO, PPC, social media marketing, advertising
Industries Served: Various sectors including finance, retail, and technology
Case Studies: View all case studies
12. Wildish & Co.
Wildish & Co. is an independent creative agency based in London, established in 2012 by Stephen Wildish and Jake Allnutt. The agency specialises in transforming businesses into brands people love, focusing on branding, strategy, creative campaigns, and digital design. They partner with clients ranging from global brands to startups.
Office Location: London, England
Year Founded: 11-50 employees
Team Size: 11-50 employees
Key Services: Branding, web design, print design
Industries Served: Various sectors, including arts, entertainment, consumer products, hospitality, and retail
Case Studies: View all case studies
KISS Communications is a strategy-led B2B marketing agency integrating advertising, branding, digital, and public relations services with web development. They focus on delivering cross-channel creativity for clients in industries such as healthcare, science, technology, agriculture, education, and research & development.
Office Location: Cambridge, England
Year Founded: 2007
Team Size: 11-50 employees
Key Services: Strategy, branding, digital marketing, public relations, advertising, web development
Industries Served: Science, Technology, Education, Agriculture
Case Studies: View all case studies
14. The Frameworks
The Frameworks is a specialist B2B marketing and branding agency with over 35 years of experience. They focus on creating authentic connections between brands and their audiences, even in sectors requiring nuanced specialist knowledge. Their approach combines strategy, creativity, and technology to help clients not only capitalise on opportunities but also identify new ones.
Office Location: London, United Kingdom
Year Founded: 1989
Team Size: 11-50 employees
Key Services:Â Brand strategy, content development, branding design, advertising and media activation, market research and audience insights, digital strategy and marketing, campaign and content strategy, digital development
Industries Served: Various B2B sectors
Case Studies: View all case studies
15. Make Us Care
Make Us Care is a creative agency that specialises in crafting brands and campaigns for fast-growth tech and lifestyle businesses. They focus on creating emotional connections between brands and their audiences through human-centric storytelling and design. Their services include research, branding, and creative campaigns aimed at building trust, loyalty, and advocacy.
Office Location: London, United Kingdom
Year Founded: 2020
Team Size: 2–10 employees
Key Services: Branding, advertising, social media marketing, video production
Industries Served: Various sectors including consumer goods and services, tech, lifestyle
Case Studies: View all case studies
The Bottom Line
Picking the right advertising agency can make a real difference for your business. The agencies on this list are known for delivering results, whether you’re looking to grow your brand or run successful campaigns. With the right support, you’ll be able to achieve your business goals and stand out in a competitive market!
Interested in partnering with an advertising specialist? Reach out to us today!
Frequently Asked Questions
An advertising agency creates, plans, and manages marketing campaigns for clients. This includes strategic planning, creative content production (like ads, graphics, and videos), media buying, and performance analysis. Their goal is to effectively promote a brand, product, or service to a targeted audience and drive measurable results.
Advertising agencies must follow legal, ethical, and industry-specific regulations. These include truth in advertising laws, data privacy standards (like GDPR), non-discrimination policies, and compliance with platform-specific ad guidelines (e.g., Google Ads, Facebook). Agencies also adhere to creative codes of conduct and client-agency contracts.
To brief an advertising agency, provide a clear, structured document outlining your campaign goals, target audience, budget, timelines, brand guidelines, and key messaging. Be specific about deliverables and desired outcomes. A strong brief ensures the agency aligns with your vision and produces effective, on-brand work.
Using an advertising agency isn’t essential but can be highly beneficial. Agencies offer strategic expertise, creative skills, media buying power, and campaign management—saving you time and ensuring higher-quality results. Small businesses may start in-house, but agencies can elevate reach and performance at scale.
Advertising agencies offer a range of services including brand strategy, campaign planning, creative design, digital marketing, media buying, and analytics. Their goal is to build brand awareness and drive conversions across multiple platforms.
