Choosing the right marketing agency can make or break your business’s growth strategy—especially when you’re looking for a partner that can handle everything from branding and strategy to digital ads and SEO.
To make your search easier, we conducted in-depth research to identify the top 12 full-service marketing agencies that are not only delivering results but also earning praise from clients. Our rankings are based on a combination of website traffic (a strong signal of brand visibility and authority) and customer reviews (because client satisfaction says it all!).
Whether you’re a startup or an established brand, this list is designed to help you find an agency that aligns with your goals and delivers tangible results.
Description: Munro Agency is a full-service B2B marketing firm based in Glasgow, offering a range of services designed to help businesses grow and scale – marketing automation, email marketing, inbound marketing, B2B lead generation, digital PR, SEO, PPC & AdWords, SEO content writing, and more. By integrating marketing automation and inbound marketing strategies, Munro Agency aims to enhance campaign effectiveness and revenue streams for businesses of varying sizes.
Office Location: Glasgow, Scotland
Year Founded: 2016
Team Size: 2 – 10 employees
Key Services: Marketing Automation, CRM Systems, Email Marketing, Inbound Marketing, B2B Lead Generation, B2B Thought Leadership, Digital PR, SEO, PPC & AdWords, SEO Content Writing, Remarketing & Retargeting, Social Media Marketing, Website Design & Development
Industries Served: Technology, HR, Software, Sustainability, Hospitality and more
Case Studies: View all case studies.
Description: We Are Social is a global creative agency focused on social media and influencer marketing. They work at the intersection of culture, creativity, and technology to build campaigns that are native to social platforms and shaped by online behaviour. With offices in key markets worldwide, they help brands stay relevant by creating culturally aware content that generates attention and drives action.
Office Location: London, United Kingdom
Year Founded: 2008
Team Size: 1,200 employees
Key Services: Strategy, Creative, Production, Media Planning, Social Media Management, Influencer Marketing, Research & Insights
Industries Served: Automotive, Entertainment, Retail, Food & Beverage, Technology, Sports
Case Studies: View all case studies.
Description: The SEO Works is a UK-based digital marketing agency focused on helping businesses grow through performance-driven search and paid media strategies. With a team of marketers, content specialists, and developers, they deliver measurable outcomes across SEO, PPC, paid social, and web projects. The agency has over 15 years of experience and positions itself as a results-first partner for businesses that want transparent, jargon-free service.
Office Location: Sheffield, United Kingdom
Year Founded: 2009
Team Size: 51–200 employees
Key Services: Search Engine Optimisation (SEO), Pay-Per-Click (PPC) Management, Paid Social Advertising, Web Design and Development
Industries Served: Financial Services, eCommerce, Healthcare, Law, Automotive, Education, Manufacturing
Case Studies: View all case studies.
4. Jellyfish
Description: Jellyfish is a global digital marketing agency that brings together media, creative, data, and technology expertise under one roof. With a strong focus on performance marketing, Jellyfish supports brands across the full digital lifecycle, from strategy and planning to execution and optimisation. They combine human creativity with innovative tools, including generative AI, to scale campaigns efficiently and improve marketing effectiveness.
Office Location: London, United Kingdom
Year Founded: 2005
Team Size: 1000+ employees
Key Services: Paid Media, SEO, Social Media, Data & Insights, Creative, Digital Strategy, Training, Analytics, CRO, Web Development
Industries Served: Retail, Travel, Finance, Technology, FMCG, Entertainment
Case Studies: View all case studies.
5. Impression
Description: Impression is a UK-based digital marketing agency delivering data-driven, performance-focused strategies across SEO, paid media, digital PR, and analytics. Founded in 2012, the agency has built a reputation for helping ambitious brands scale online. They prioritise technical excellence and innovation, supported by a large in-house team that covers strategy, media planning, creative, and conversion rate optimisation.
Office Location: Nottingham, United Kingdom
Year Founded: 2012
Team Size: 120+ employees
Key Services: SEO, PPC, Digital PR, Paid Media, Paid Social, Content Marketing, Analytics, Data Science, CRO, Media Planning, UX Design, Digital Strategy
Industries Served: Ecommerce, B2B, SaaS, Finance, Sustainability
Case Studies: View all case studies.
6. Hallam
Description: Hallam is a full-service digital marketing agency providing integrated strategies to support business growth. Their work spans SEO, paid media, social media, content marketing, PR, and web design. They work across strategy, execution, and performance measurement, helping clients improve digital visibility and drive commercial outcomes. Hallam places a strong emphasis on collaboration and data-driven decision-making.
Office Location: Nottingham, United Kingdom
Year Founded: 2000
Team Size: 51–100 employees
Key Services: SEO, Paid Media (PPC & Display), Digital PR, Content Marketing, Web Design & Development, Social Media Marketing, Analytics & CRO, Digital Strategy
Industries Served: Retail, E-commerce, B2B, Public Sector, Non-profit, Tech, Education
Case Studies: View all case studies.
7. Transmission
Description: Transmission is a global B2B marketing agency focused on driving growth and performance for technology-led brands. They offer integrated marketing services that span the entire customer lifecycle. With an emphasis on data, creativity and tech, Transmission helps clients create demand, deepen engagement and accelerate sales outcomes by providing full-funnel support including ABM, demand gen, brand building and media activation.
Office Location: London, United Kingdom
Year Founded: 2013
Team Size: 300+ employees
Key Services: Insights, Strategy and Planning, Account-Based Marketing, Channel Marketing, Branding, Sales Enablement, Demand Generation, Creative, Content, SEO, Customer Experience, Paid Media, Social Media Management, Virtual Events, MarTech Consultancy, Marketing Operations, Analytics
Industries Served: Technology, Cybersecurity, Manufacturing, Telecommunications, Professional Services
Case Studies: View all case studies.
8. Wavemaker
Description: Wavemaker is a global media agency that helps brands grow by reshaping consumer decision-making through media, content, and technology. Part of GroupM and WPP, the agency was formed from the merger of MEC and Maxus. Wavemaker combines strategy, data, and media activation to optimise performance across digital, offline, and eCommerce channels. The agency supports some of the world’s biggest brands including Vodafone, IKEA, L’Oréal, and Paramount.
Office Location: London, United Kingdom
Year Founded: 2017
Team Size: 350+ employees
Key Services: Media Planning, Media Buying, Content Strategy, Performance Marketing, Digital Media, Data and Analytics, eCommerce Strategy
Industries Served: Retail, Telecommunications, Beauty and Personal Care, Automotive, Technology, Entertainment, Finance
Case Studies: View all case studies.
9. Brainlabs
Description: Brainlabs is a global digital-first media agency renowned for its high-performance approach to media planning and buying. The company uses a unique formula of testing, technology, and talent to deliver measurable and profitable business impact for its clients. By assembling dedicated superteams that combine vertical knowledge, media expertise, and platform proficiency, Brainlabs crafts marketing strategies centered around customer insights.
Office Location: London, United Kingdom
Year Founded: 2012
Team Size: Approximately 984 employees
Key Services: Media Planning, Data Analysis, Creative & UX, Technology Solutions
Industries Served: Diverse sectors including Finance, Retail, Travel, and Technology
Case Studies: Not publicly displayed
10. Croud
Description: Croud is a full-service digital marketing agency offering performance-led services across strategy, media, creative, and data. Built on a hybrid model, it combines in-house experts with a network of over 2,400 remote specialists called “Croudies.” This approach helps scale delivery while maintaining quality and flexibility. Founded by two former Google and agency professionals, Croud’s model challenges traditional agency structures.
Office Location: London, United Kingdom
Year Founded: 2011
Team Size: 500+ employees
Key Services: Brand Planning, Strategy, Integrated Media, Paid Search, SEO, Programmatic, Social Media Marketing, Content Marketing, Creative Services, Data and Analytics
Industries Served: Technology, Retail, Fashion, Finance, Travel, Luxury
Case Studies: View all case studies.
11. Click Do
Description: ClickDo Ltd is a full-service digital marketing agency based in London, UK, specializing in search engine optimisation, web design, and online advertising services. Founded in 2013 by Fernando Raymond, ClickDo has grown into a team of professionals dedicated to enhancing clients’ online visibility and business performance. Their services include SEO consulting, guest blogging and outreach, branding, media consulting, Google AdWords management, and more.
Office Location: London, United Kingdom
Year Founded: 2013
Team Size: Approximately 3 employees
Key Services: SEO consulting, guest blogging, branding services, media consulting, Google AdWords, digital PR, link building, digital marketing, press release services
Industry Served: Various
Case Studies: View all case studies
12. SWC Partnership
Description: SWC Partnership is a full-service marketing agency supporting B2B and B2C clients across the UK and internationally. The agency acts as an external marketing department, providing strategy, creative, and media services designed to generate leads and grow market share. Their team includes strategists, creatives, media planners, and digital specialists, working together on multi-channel campaigns across a wide range of sectors.
Office Location: Royal Tunbridge Wells, United Kingdom
Year Founded: 2014
Team Size: 11–50 employees
Key Services: Brand Strategy, Media Planning, Digital Marketing, Creative Concepting, Art Direction, Copywriting, Website Design and Build, Research and Insight
Industries Served: Technology, Software, Aviation, Engineering, Manufacturing, Automotive, Fintech, Consumer Goods
Case Studies: View all case studies.
The Bottom Line
The world of marketing is vast, but the agencies on this list have proven themselves through consistent performance, high client satisfaction, and strong digital presence. Each one offers a comprehensive suite of services to meet diverse business needs.
Are you seeking a creative powerhouse, a data-driven strategist, or an all-in-one growth partner? These 12 agencies stand out for their ability to deliver. We hope this guide helps you make an informed decision and sets you on the path to marketing success!
Frequently Asked Questions
A full-service marketing agency is a company that offers a comprehensive range of marketing services under one roof. This typically includes branding, strategy, digital marketing (SEO, PPC, social media), content creation, web design, email marketing, and analytics. Businesses choose full-service agencies to streamline their marketing efforts with a single, cohesive team.
Full-service marketing costs vary depending on the agency’s size, scope of services, and your business needs. On average, small to mid-sized businesses can expect to pay between $3,000 to $20,000+ per month, while larger campaigns or enterprise-level support may exceed that range. Some agencies also offer project-based or hourly pricing models
A marketing agency is a team that executes a wide range of marketing tasks, such as running ad campaigns, creating content, and managing social media. A marketing consultant, on the other hand, provides expert advice and strategy but may not implement the work. Agencies are ideal for hands-on support, while consultants focus on planning and optimisation.
Yes, full-service marketing agencies can be worth it for businesses seeking end-to-end support and consistent branding across all channels. They provide access to diverse expertise, reduce the need for multiple vendors, and often improve campaign efficiency through integrated strategies.
To choose the best full-service marketing agency, consider their track record, client reviews, case studies, industry experience, and alignment with your goals. You should look for agencies that offer transparency, strong communication, and proven results in areas relevant to your business.
