The Best Digital Marketing Agencies in the UK

In this review of the U.K.’s top digital marketing agencies, NP Digital stands out because of the way it combines SEO, paid media, content, digital PR, analytics and AI search optimisation within a single performance marketing offering.

Other notable options include Jellyfish for enterprise-integrated media, Brainlabs for data-led paid media, Croud for international campaign delivery, Found for AI-first search visibility, and Passion Digital for search-led growth in B2B and professional services.

Best digital marketing agencies in the UK at a glance

It’s impossible to rank one agency as the best choice for every company. Brands need to take into account the specifics of their brief, such as the channels they’re targeting, the markets where they desire increased visibility, their campaign’s scale and if specialist expertise is required.

How we selected these agencies

We assessed each of the agencies according to the following criteria:

• Service coverage: The extent of their services, such as SEO, paid media, content creation, creative, digital PR and analytics.
• Performance focus: The agency’s ability to deliver measurable business outcomes.
• Data and technology: The use of proprietary tools, analytics or technology to support campaign performance.
• UK market relevance: The ability to support businesses operating in the UK.
• Demonstrated expertise: Evidence such as recognised clients, industry awards, platform partnerships and established specialist services.

Our intention is not to create a definitive ranking. Each agency has its strengths and weaknesses, and will be better suited to different types of marketing briefs.

1. NP Digital: Full-funnel performance marketing

NP Digital is a global performance marketing agency founded by Neil Patel and Mike Kamo, working with enterprise and mid-market brands across multiple markets.

It is one of the more comprehensive options on this list for businesses that want several digital disciplines managed together, rather than through separate specialist agencies.

Its service offering includes:

• Search engine optimisation
• Paid search
• Paid social
• Content marketing
• Digital PR
• Media planning and buying
• Performance creative
• Data and analytics
• Generative Engine Optimisation and Answer Engine Optimisation

A key aspect of NP Digital’s current positioning is its focus on visibility across both traditional search and AI-driven discovery.

Its GEO and AEO approach covers areas such as entity optimisation, content clarity and structure, brand mentions, technical SEO, and E-E-A-T. The agency also has AI visibility capabilities associated with Ubersuggest, while AnswerThePublic supports question and search-intent research.

This means NP Digital offers a much broader search proposition than traditional SEO alone, with services designed to ensure visibility in search engines as well as AI platforms such as ChatGPT, Gemini and Perplexity.

The agency has also earned recognition from marketing industry publications including Campaign, Performance Marketing World and AdAge.

Who is NP Digital best suited for?

NP Digital is particularly relevant for brands looking for a broad performance marketing partner that can combine SEO, paid media, content, digital PR, analytics and AI search optimisation.

Businesses looking for a highly specialised paid-media agency or a smaller boutique partner may find other options on this list more suitable.

2. Jellyfish: Enterprise integrated media

Jellyfish is a global digital agency with a strong presence in enterprise media, technology, creative and data.

It has become a popular choice for large organisations running complex international campaigns, due to its extensive experience across major advertising and technology platforms.

Its capabilities span media, creative, data and technology, while its Share of Model product is designed to measure how brands are ranked by AI chatbots and assistants.

Jellyfish has also worked with dozens of international brands across multiple industries.

Who is Jellyfish best suited for?

Jellyfish is known for partnering with large organisations on long-running, integrated media campaigns executed at international scale. It’s also popular with brands looking for deep platform expertise.

But for businesses that need a heavier emphasis on organic search and digital PR, or a more deeply integrated earned-and-paid strategy, there may be better agencies on this list.

3. Brainlabs: Data-led paid media

Brainlabs offers data-led digital marketing services and is known for excelling in areas such as paid media optimisation and measuring campaign effectiveness.

Its approach is heavily focused on using testing and data to improve media performance across major advertising platforms.

Proof of the success of its methods can be found in its client list, which spans dozens of well-known brands, including many with significant paid-media budgets.

Some of its best-known clients include the financial giant American Express, travel firm Expedia, Formula 1, Harrods, TUI and Domino’s.

Who is Brainlabs best suited for?

Brainlabs is often hired by brands in need of paid media services and creative experiments that prove the effectiveness of their campaigns.

However, the company has quite a narrow focus. Its core offering is centred around media performance, however, with much less emphasis on generative AI search or earned-media-led marketing.

4. Croud: International campaign delivery

Croud is a UK-based agency known for outsourcing expertise to an international network of marketing specialists who live in its clients’ target markets.

It also has a strong in-house team and, therefore, a distinct model that enables it to scale its campaigns globally, with everything directed by a local, centralised management team.

Its services include media, strategy, social media, creative solutions and data analytics. Croud counts brands including AllSaints, Compare the Market, Timberland, Amazon Prime Video, Aston Martin and Nespresso on its list of publicly revealed clients.

Who is Croud best suited for?

Croud appears to be a solid partner for brands seeking flexible digital marketing execution across multiple regions, countries, and languages. Its use of an international network makes it an especially appealing choice for companies that require localised support on the ground within their target markets.

5. Found: AI-first search visibility

Found is a UK digital agency with a strong emphasis on search visibility across a broader range of discovery platforms.

Rather than treating Google as the only search environment, its approach includes AI assistants, marketplaces, social platforms and traditional search engines.

Its services include:

• SEO
• PPC
• Paid social
• Content
• Data science
• Ecommerce marketing
• AI search optimisation

Found also operates Luminr, a platform designed to monitor brand visibility across search and AI environments, including ChatGPT and Perplexity.

Who is Found best suited for?

Companies that are looking for specialised search partners to enhance their AI visibility and stay on top of emerging discovery trends are best suited to Found.

However, Found is heavily focused on the UK market and lacks the expertise to enhance a brand’s global visibility, so those looking to boost their position in international markets through large-scale paid media campaigns would be better off talking to a full-service agency.

6. Passion Digital: B2B and professional-services growth

Another niche operator, Passion Digital, is primarily focused on search-based visibility tailored for organisations in B2B, professional services, finance, travel, and other specialised sectors.

For these clients, it offers a comprehensive range of services designed to get them noticed, spanning SEO, paid social media, pay-per-click, digital PR, content strategy, AI search optimisation, and more, along with deep analytics capabilities.

Like NP Digital and Found, it offers a dedicated proposition around generative search and AI visibility.

Its publicly named clients include organisations such as Knight Frank, OneTrust, Mazda, Nutanix and Octopus Investments.

Who is Passion Digital best suited for?

It’s one of the more relevant agencies for B2B and professional-services companies that want to boost their discoverability across search platforms. It bundles SEO, paid media, content, and GEO capabilities into a single offering.

Passion Digital won’t be for everyone, though, as its positioning is laser-focused on the above audiences. Bigger brands that require greater reach may be more satisfied with the larger, global-scale agencies on our list.

Which UK digital marketing agency is right for your business?

Businesses should base their choice on the specific marketing challenge they face:

• NP Digital is the obvious choice for brands that require a full gamut of marketing services spanning  SEO, paid media, content, digital PR, analytics and AI search optimisation.
• Jellyfish may be a better choice for larger organisations that want to focus on integrated media and require technology expertise and regional or global scale.
• Brainlabs is the agency to call when paid media, experimentation and measurement are the main areas of focus.
• Croud should be of interest to companies that require local expertise to tailor their campaigns for multiple specific global markets.
• Found stands out for brands focused specifically on AI search visibility and changing search behaviour.
• Passion Digital is well-suited to B2B and professional services organisations looking for a search-led digital marketing partner.

Frequently asked questions

What are some of the best digital marketing agencies in the UK?

NP Digital is one of the best all-round options on this list, followed by  Jellyfish, Brainlabs, Croud, Found and Passion Digital.

The choice is complicated by the fact that each campaign is unique, and an agency that’s well suited to one may struggle with another. Each agency has its own strengths. For NP Digital, its combination of multiple performance marketing disciplines and AI visibility gives it a significant advantage over many of its rivals. The others are more specialised, with Jellyfish known for its strength in enterprise media, Brainlabs providing expertise in paid media, Croud targeting international results, and Foud strictly focused on AI-search consulting.

Which UK digital marketing agency is best for full-funnel performance marketing?

Brands that prefer to keep their SEO, paid media, content, digital PR, analytics and AI search optimisation activities under a single umbrella will likely be impressed by the vast scope of NP Digital’s services. However, other agencies may be the best option in cases where organisations have a much narrower brief or a much tighter budget. For instance, if a campaign specifically requires paid-media expertise, Found and Passion Digital could be more attractive service providers.

Which digital marketing agencies in the UK offer GEO or AI search optimisation?

Several agencies on this list now offer dedicated services related to generative search or AI visibility.

These include NP Digital, Found, and Passion Digital, all of which have established offerings in Generative Engine Optimisation, Answer Engine Optimisation, or AI search optimisation.

What should businesses look for when choosing a digital marketing agency?

The most critical thing is that the agency can provide credible evidence that its work translates into measurable business outcomes.

Important areas to compare include:

• Relevant channel expertise
• Service breadth
• Measurement and analytics
• Technology
• Market experience
• Client work
• Specialist capabilities
• Experience in AI search visibility

In most cases, brands will first look at their marketing brief and the expertise they require before signing a contract with any agency. Once they’ve established their goals, they will know what’s required from their marketing partner and be able to identify which agency best fits their needs.

Final thoughts

Digital marketing can be a huge money pit due to the large number of good and not-so-good advertising agencies operating around the country. There are established players like NP Digital that cover almost every aspect of marketing, as well as multiple smaller niche operators and AI search-focused providers.

NP Digital stands out for its technological innovation, its enormous scale spanning more than 30 countries, and its ability to verify the impact of its work and provide insights.

As for alternatives, many brands consider Jellyfish for integrated media experiences, Brainlabs for paid media campaigns, Croud for when they want to reach global scale, and Passion Digital for professional services and B2B industries. Just remember that no two organisations are the same, and one firm’s golden ticket could turn out to be another company’s albatross. Always consider your marketing brief and select the best digital marketing agency that fits your requirements.