When it comes to growing your business online, partnering with the right social media marketing agency in London or across the UK can be a game-changer. But let’s be real—there are a lot of agencies out there. Some promise the world and deliver a few likes. Others? They help you go viral, convert followers into customers, and build a brand that lasts.
Whether you’re a small business owner looking to launch on TikTok or a marketing team searching for fresh creative firepower for Instagram or Facebook, this guide is built for you. We’ve hand-picked a range of agencies—from influencer marketing specialists to full-service creative partners—based on their ability to actually move the needle.
Let’s dive straight in.
House of Marketers – Social Media Marketing Agency in London
If you’re looking for real results—not vanity metrics—House of Marketers is the agency for you. As a specialist social media influencer marketing agency in London, we help brands scale through influencer-driven, data-backed strategies across TikTok, Instagram, YouTube and beyond. Co-founded by ex-TikTok employee Inigo Rivero, our team brings unique platform insights and creative strategy to every campaign.
Our services include:
- Influencer marketing strategy
- UGC creation
- Paid ad management (TikTok Ads, Meta Ads, Google Ads)
- Organic profile growth
- End-to-end campaign execution
We’ve launched global campaigns for boohoo, Rimmel London, Tim Hortons, AZAR, Apple Music, Ibiza Rocks RedBull, HelloFresh, Hilton, and many more. From building hype to driving direct sales, our team knows how to convert attention into action. As one of the top social media marketing agencies in London, we don’t just run campaigns—we build brand momentum.
Have a look at out our House of Marketers success stories here.
2. Make
Make is one of the UK’s fastest-growing digital agencies, offering full-funnel marketing, website design, and paid media services. With a team of 35+ creatives, developers, and strategists, they’ve worked with clients like Disney, Asana, and Clearpay.
They focus on measurable outcomes, combining data-led targeting with engaging creative to deliver multi-platform campaigns. Make is an ideal choice for businesses wanting an agency that’s both technical and creative.
3. Trio Media
Based in Leeds with a growing presence in London, Trio Media is a full-service digital marketing agency helping SMEs and in-house teams scale their results. They offer services in SEO, paid media, web development, and social media marketing—making them a versatile partner.
They take a consultative approach, working closely with clients to align strategy with goals and ensure measurable ROI. If you’re after practical, hands-on support that covers all digital touchpoints, Trio Media delivers.
4. Mantra Media
Operating in both the UK and Japan, Mantra Media brings a strong ethical backbone to branding and marketing. Their focus is on clarity, culture, and purpose—ideal for mission-led organisations, nonprofits, and global brands.
Their services cover creative strategy, content marketing, and digital storytelling. For brands that want to go beyond metrics and make meaningful impact, Mantra Media offers a deeply values-led approach.
5. Re:act
re:act is a creative agency built around the belief that good people and bold ideas drive real engagement. They create standout content for major FMCG brands and take pride in doing things differently—whether that’s through sharp creative, fast execution, or collaborative strategy.
From TikTok campaigns to full-scale brand activations, they’re built for businesses looking for spark, speed, and scale in a highly competitive market.
6. THINKHOUSE
THINKHOUSE is a youth-powered, future-focused agency that works with brands who care about culture, planet, and purpose. They specialise in blending marketing with activism—ideal for Gen Z-facing brands.
Their work spans three areas: FAME (PR, digital, and events), TRANSFORMATION (youth insights, reverse mentoring), and PLANET (purpose-led marketing). THINKHOUSE is best for companies looking to build long-term relevance with younger, socially conscious audiences.
7. The GO! Network
More platform than agency, The GO! Network helps brands find the right marketing partners. They run full agency matchmaking processes, from brief to onboarding, and also provide insights on market trends and performance benchmarks.
This is a great option for companies unsure where to start, or looking to switch agencies and reduce the risk of mismatched expectations.
8. Brilliant Agency
Based in the North of England, Brilliant Agency is a leading social-first creative agency that has been elevating brands for over a decade. Their team of strategic thinkers, designers, writers, and content creators collaborates closely with clients to produce meaningful content that resonates with consumers.
Brilliant Agency’s services include social media strategy, content creation, brand strategy and design, and influencer marketing. Their insights-led approach ensures that brands not only participate in conversations but lead them, making a lasting impact in the digital space.
9. Bind Media
Bind Media is a UK-based paid media agency that transforms curiosity into clarity and performance. Their holistic approach combines strategic paid media campaigns, performance creative, conversion rate optimisation, and analytics to deliver measurable results. By deeply understanding each client’s business and data, they craft tailored strategies that drive growth.
Bind Media’s culture emphasises kindness and collaboration, believing that happy teams produce the best work. Their client roster includes notable brands like Gousto, BBC Maestro, Webex by Cisco, and Pet Drugs Online. Recognised for their excellence, they’ve received accolades from The Drum, including the Grand Prix for PPC Agency and awards in analytics, online advertising, and media buying.
For businesses seeking a partner that combines curiosity-driven insights with strategic execution, Bind Media offers a path to clarity and performance.
10. Social Travel
Social Travel is a London-based digital agency focused exclusively on the travel and hospitality sector. Their services include SEO, PPC, and link-building strategies designed to boost bookings and grow online visibility.
With a fully in-house team, Social Travel ensures quality control and personalised strategy execution. Their niche focus makes them especially effective for travel companies looking for specialised expertise.
11. Clevercherry
Clevercherry is a Birmingham-based creative and digital agency with over 25 years of experience in delivering innovative marketing solutions. Specialising in SEO, social media marketing, product design, logo creation, email marketing, and advertising, they offer a comprehensive suite of services to elevate brand presence and performance. Their client portfolio includes notable names such as Yale, Klober, and BBC Worldwide. With a commitment to original ideas and measurable results, Clevercherry continues to challenge conventions and drive success for their clients.
12. Screaming Frog
Screaming Frog is a search marketing agency best known for their technical SEO expertise and the widely used SEO Spider tool. Their services cover onsite SEO audits, PPC campaigns, and digital marketing consulting.
They’re a great partner for businesses that want a deeply analytical approach to search visibility and performance marketing.
13. JMP
JMP is a UK-based content and production agency that excels in crafting compelling brand narratives. Their expertise spans from long-form storytelling to short-form social content, enabling brands to connect and build trust with their audiences.
They focus on real people and authentic stories, bringing brand narratives to life through human-led, people-first approaches. Their platform-first content is designed to grab attention and place brands front and centre.
In today’s digital landscape, selecting the right social media marketing agency is crucial for your brand’s success. The UK boasts a diverse array of agencies, each offering unique strengths to help you achieve your marketing objectives.
14. Wimbart
Wimbart is a PR agency with a sharp focus on Africa and emerging markets. They specialise in media campaigns for startups and tech companies, crafting strategic press coverage that builds credibility across global platforms.
15. Gilroy
Gilroy is a leading UK-based B2B marketing agency with over 50 years of experience in driving growth for enterprise brands. Recognised among the top 10 Account-Based Marketing (ABM) agencies, Gilroy offers a comprehensive suite of services, including demand generation, deal-based marketing, and sales enablement. Their proprietary Smart Engine platform leverages data-driven insights to optimise marketing strategies and accelerate sales performance. With a commitment to innovation and measurable results, Gilroy partners with clients to navigate the entire customer journey—from awareness to advocacy—ensuring impactful and lasting business outcomes.
16. CCGroup
CCGroup (now part of The Hoffman Agency) is a B2B tech PR and analyst relations firm working across fintech, telecoms, and cybersecurity. With offices worldwide and deep sector knowledge, they’re a reliable choice for complex, enterprise-level marketing.
17. Sherbet Donkey Media
A conversion-driven digital agency, Sherbet Donkey helps growth-focused brands with SEO, paid ads, and custom websites. Their no-nonsense, ROI-first mindset makes them ideal for SMEs and eCommerce businesses looking to scale fast.
18. Babel PR
Babel is a full-service communications agency working across telecoms, IoT, fintech, and deep tech. Their global footprint and sector specialisation make them a go-to partner for brands needing PR that actually translates to leads and growth.
19. Water Creative
A boutique social media marketing agency in London, Water Creative specialises in short-form content and influencer campaigns across TikTok, Instagram, and YouTube. They offer flexible, project-based packages and take care of the admin—from contracts to payments—making them a great option for fast-moving brands that need creative agility without the hassle.
20. Make Honey
Blending PR, content marketing, and influencer strategy, Make Honey delivers culturally relevant campaigns for lifestyle and tech brands. With clients like Amazfit and Ranger IQ, their integrated approach helps brands cut through noise with stories that actually resonate. Ideal for businesses looking for visibility and press coverage alongside social growth.
21. Disrupt Marketing
Disrupt is a culture-led agency focused on audience-first storytelling. Their campaigns are built to tap into real-time trends and niche online communities—perfect for brands aiming to stay relevant and agile. Services include influencer sourcing, content creation, campaign management, and in-depth reporting across platforms.
22. CEEK Marketing
With access to a proprietary influencer network via sister company District Global, CEEK stands out for performance-led influencer marketing. Their campaigns span TikTok, YouTube, and Instagram, with strong emphasis on data alignment, content testing, and brand fit. For brands looking to scale influencer outreach efficiently, CEEK is a smart pick.
23. Sociably
Focused exclusively on high-end brands, Sociably helps luxury fashion, watch, and alcohol companies craft premium influencer campaigns. Their team handles casting, content production, and campaign delivery with a strong focus on aesthetics and storytelling. If your brand lives in the luxury lane, this is your go-to agency.
24. Ritual Network
A YouTube-first agency with deep expertise in long-form video content, Ritual Network is certified by YouTube and works with creators to deliver branded video partnerships. Past collaborations include Warner Bros and The National Lottery. They’re ideal for brands prioritising educational, entertainment-rich, or evergreen YouTube campaigns.
25. Summer
Summer is a talent agency representing top-tier UK influencers including Chloe Lloyd and Lauren Nicole. They’ve worked with global brands like Disney, ASOS, and Magnum, offering high-visibility influencer partnerships that drive reach and credibility. If you’re looking for celebrity-level amplification with influencer polish, Summer delivers.
26. SevenSix Agency
Founded to drive change in the influencer industry, SevenSix is a diversity-first agency offering campaign execution, casting, and consultancy. They champion underrepresented creators and help brands design inclusive campaigns with real impact—both culturally and commercially. A go-to partner for brands serious about ethical marketing.
27. M&C Saatchi Social
Backed by the global M&C Saatchi brand, this agency blends traditional marketing excellence with modern creator-first strategies. They manage a diverse roster of influencers (like Roxxaurus and Cocobeautea) and have delivered campaigns for L’Oréal and GB News. Ideal for brands wanting scale, structure, and a deep bench of talent.
28. Social Chameleon
Specialising in beauty, fashion, and lifestyle, Social Chameleon runs full-service influencer marketing campaigns—from strategy and sourcing to reporting. Their standout feature is relationship-building: they prioritise long-term influencer collaborations that feel natural, aligned, and high-converting. Great for brands that want to build a loyal community, not just a one-off splash.
29. Positive
Positive is a results-driven B2B tech PR consultancy based in London, offering rare expertise in content, analyst relations, and performance-led PR. With team members from backgrounds as varied as market research, music journalism, and mathematics, they bring creative problem-solving to tech-forward storytelling.
They also help SaaS and startup brands build predictable sales engines using data science, structured processes, and strategic messaging. Clients value their direct, no-nonsense communication and their strong focus on measurable outcomes.
30. Luya
Luya is a creative digital marketing and PR agency offering services such as social media management, influencer marketing, and social media graphics.
They manage and monitor clients’ social media content across platforms like Instagram, Facebook, Twitter, Pinterest, and LinkedIn, providing monthly analyses to optimise performance. Their influencer marketing services connect brands with bloggers, vloggers, journalists, industry experts, and celebrities to access engaged communities.
Additionally, their in-house design team creates engaging social media graphics to capture audience attention.
31. BARK
BARK delivers performance marketing for global eCommerce brands through the trifecta of smart strategy, brilliant creative, and advanced data science. Meta-certified and known for their cross-channel expertise, they develop full-funnel strategies across paid social, paid search, and beyond.
Their in-house creative team crafts high-performing ads, while their data scientists use attribution modeling and lifetime value analysis to unlock growth. If you’re looking for a partner that combines creative flair with serious analytics, BARK is a standout.
32. UltB
UltB specialises in building predictable sales engines for B2B companies through data science, structured processes, and meaningful relationships. They assist agencies, software companies, startups, and IT firms in scaling their outreach and acquiring quality leads. By leveraging AI technologies, UltB aims to automate the sales process while maintaining a personal touch. Their boutique approach ensures a focus on quality over quantity, fostering a startup culture that prioritises innovation and client satisfaction.
33. Happy Hour
Happy Hour is a leading TV and video advertising agency in the UK, catering to brands that don’t stand still. Their services include TV commercials, video production, audio advertising, integrated campaigns, animation, and feature films. With a team of industry-leading creatives, strategists, and producers, Happy Hour has been producing national TV advertising campaigns, marketing films, corporate videos, and online content for over 15 years, ensuring that brands connect and build trust with their audiences through compelling storytelling.
34. FirstFound
Since 2000, FirstFound has been helping businesses succeed in the digital world. As one of the UK’s most established digital agencies, they offer a range of services including SEO, PPC, social media, web design, branding, and content marketing. FirstFound is dedicated to enabling all businesses, regardless of size, to thrive online, providing professional, agile, and technology-driven solutions tailored to each client’s unique needs.
35. Damteq
Based in Fareham, Hampshire, Damteq is a specialist growth marketing agency renowned for its human-centric approach to digital marketing. As a certified Google Premier Partner, they rank among the top 3% of agencies worldwide, reflecting their commitment to excellence in SEO, PPC, UX/UI, and website design.
Damteq’s in-house team of design and marketing specialists serves clients across Hampshire, London, and 15 other countries, handling complex marketing and growth challenges with professionalism and reliability. Their services encompass tailored, data-led strategies, technical SEO, PPC management, WordPress website optimisation, content strategy, social media advertising, and more.
Final Thoughts
The UK’s digital landscape is rich with agency talent—from high-growth disruptors to established creative studios. But navigating the noise to find a partner that truly understands today’s fast-moving social platforms is a challenge in itself. Whether you are a brand looking to scale on TikTok, optimise paid social across Meta and YouTube, or unlock the power of influencer campaigns, choosing the right agency is key.
At House of Marketers, we go beyond trend-chasing. We combine creator-powered storytelling with performance-driven paid media to help brands grow faster, smarter, and with cultural relevance built in. As a leading social media marketing agency in London, our campaigns are backed by real data, platform-level insight, and results that speak for themselves.
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House of Marketers (HOM) is a leading TikTok Marketing Agency. Our global agency was built by early TikTok Employees & TikTok Partners, which gives us the insider knowledge to help leading brands, like Redbull, Playtika, Badoo, and HelloFresh win on TikTok. Want us to convert more of Gen Z and Millennials with TikTok? Get in touch with our friendly team, here.