Your Guide to the Best Social Media Agency in London 2025

📈As of 2025, there are over 18,865 advertising agencies in the UK (IBISWorld), and no surprise, most of them are based right here in London.

With trends moving by the minute, a digital marketing strategy that cuts through is a must-have for businesses looking to scale big on socials and connect with audiences. But with so many agencies to choose from, how do you find the right one? Don’t stress… we’ve got you.

Our guide to the top social media agencies in London in 2025 covers:

• A Comprehensive List: The top 10 social media agencies in London 🏆
• Methodology: The sources, data, and insights we used to rank each agency 📈
• Industry Expertise: Insight into the industries these agencies excel in 🔥
• Key Services: A breakdown of their key service offering ✅
• Notable Clients: A look at some of their biggest clients 🌍
• OOB’s Opinion: Our thoughts on each agency 👀

In a city as connected and competitive as London, with millions scrolling through content daily, a social-first strategy, grounded in creativity, clarity, and cultural relevance, is non-negotiable.

Let’s dive in.

TL;DR

1. Our Own Brand: A social-first agency creating viral campaigns for global brands. Finalists in the UK Social Media Awards 2025, they combine social media expertise with best in class branding and production to maximise impact on social. 
2. OK COOL: Global social-first agency and OG TikTok partner, known for culturally-led campaigns that build brand relevance.
3. We Are Social: A global powerhouse delivering bold campaigns, with a knack for industries like sports, tech, and music.
4. Born Social: B-Corp agency specialising in social strategies for challenger brands and purpose-driven startups.
5. Spin Brands: Social natives creating bold, fearless campaigns for brands looking to connect with younger, Gen Z audiences.
6. Goat Agency: Influencer-first, performance-driven agency using data to deliver measurable full-funnel results.
7. The Social Element: Experts in brand safety, crisis response, and always-on community management for global names.
8. Truffle Social: Creative studio blending polished social storytelling with venture partnerships for lifestyle brands.
9. Pepper: Design-led agency balancing editorial-style content with strategy, known for fresh, authentic campaigns.
10. Spring The Agency: Female-founded, joy-fuelled agency creating viral social and immersive experiences for beauty and lifestyle brands.

Methodology

Our rankings are based on a mix of verified client reviews (Clutch, The Manifest), published case studies, and client testimonials to measure real impact, minus the fluff. 

👀 To spot the professionals from the pretenders, we also pulled from:

• Industry directories (DesignRush, Agency Spotter)
• Each agency’s own online presence
• Award shortlistings & nominations
• Press mentions
• Client portfolios 

Based on these sources & insights, these are the 10 agencies consistently delivering creativity, results, and strong client partnerships.

What Makes a Top Social Media Marketing Agency?

With so many expert marketing agencies in London, it’s hard to know who’ll be the right fit. So what separates the good from the game-changing? Look out for these green flags:

• ✅ Next Level Creative: They’re culturally tapped in, socially native, and creatively fearless. They just get it…your brand, your audience, and what it takes to win attention in the scroll.
• ✅ Data-Backed Results: They have detailed processes for reporting, tracking engagement, and ROI. They evidence growth at each stage and adapt strategy where necessary. 
• ✅ Strong Client Relationships: Want to know you’ll be taken care of from day one? Glowing reviews, repeat clients, quick response times, and transparent communication are surefire signs of expert account management. Partnering with an agency should feel like a seamless extension of your in-house team.
• ✅ Quality Content Creation: A top social media agency delivers visuals that fully lives up to your vision through best in class content creation. From lo-fi, UGC-style reels, to premium, high-end production and campaigns, the best agencies can do it all, uniquely tailoring content strategy to audiences and channels.
• ✅ Going the Extra Mile: Execution is the baseline. Look for agencies who go further: thinking ahead, pushing boundaries, proactively spotting new opportunities for growth. The best agencies live and breathe social, so they’re always ahead of the game.

The right agency should feel like a natural extension of your team. From day one, they just get your brand, know what will make it grow, and use the data to prove it. 💫

The Top 10 Social Media Agencies in London 2025

1. Our Own Brand

Born in 2018, OOB is an award winning social-first creative agency. They specialise in all things social media, branding and production. Through a trend-led, humanistic approach to social, they deliver viral campaigns and authentic brand engagement. OOB combine social media expertise with best in class branding and production to create maximum impact. They truly understand how a brand should adapt to social in every aspect, ensuring impact across all channels.

Why OOB Stand Out: 🚀

• Top-rated social media agency: OOB has 40+ verified 5-star reviews on Clutch, the leading global platform for agency reviews, a testament to proven results and client satisfaction.
• Social-first experts: OOB is a team of social natives. We understand the nuances of each channel, what drives engagement, and how to turn casual scrollers into loyal brand advocates. 
• Best-in-class production & design: Our standout production and design-driven storytelling create bold, eye-catching brand experiences that drive measurable results.
• Proven performance: Demonstrable success across key platforms, from Instagram, TikTok and Threads to emerging channels, with impressive growth and conversion metrics showcased in client case studies. OOB continues to snatch industry awards. 
• Strategic excellence: We don’t just chase trends, we build scalable social strategies that align with your brand and business goals.

⚙️ OOB’s Key Services:

• Social: Social strategy & positioning, social media management, platform native content creation, channel & community management, campaign creation, social listening, integrated reporting, data & insights. 
• Creative: Platform native content creation, content production, UGC, 360 production, campaign creation & management, copywriting, TVCs. 
• Influencer 
• Brand: Brand strategy & positioning, visual identity, verbal identity, packaging design, website design & development. 
• Paid: Paid social strategy, paid social campaign management, paid social asset creation, influencer & UGC paid social.

🌟 Key Clients: SONOS, TikTok, Ann Summers, ZAGG, Indomie.

⚡️Ready to work with one of the top social media agencies in the UK? Explore our social media case studies and services, or get in touch to discover how we can elevate your brand.

2. OK COOL

Founded in 2016, OK COOL is a global, social-first creative agency renowned for helping brands master social platforms. As the OG partner to TikTok, this agency could be the right fit for brands looking to build cultural relevance with younger audiences, through authentic, UGC-style content, or high-impact campaigns. 

⚙️ OK COOL’s Key Services:

• Community: Platform management, community management, paid media management, campaign reporting, live events. 
• Creative: Brand identity, creative positioning, visual guidelines, social media toolkits, creative ideas and concepting, creative campaigns, social first creative direction, art direction and styling. 
• Creators: Creator strategy, influencer strategy, creator management, creator campaigns, influencer campaigns. 
• Production: Full-service production, OOH, photography, videography, sound design, motion design, AR, merch, virtual events. 
• Strategy: Research and data analysis, trend reports, industry reports, brand positioning, campaign strategy, social strategy, TikTok strategy. 
• Visual identity: Art direction, design system, graphics, typography, colour palette, imagery, applications, logo design. 

🌟 Key Clients: TikTok, Nike, Urban Outfitters, Puma, Benefit Cosmetics.

🧠 OOB’s opinion: Genuinely culture-led, OK COOL have the team to make brands fresh, relevant – and, well, cool.

3. We Are Social

With over 1,000 creatives worldwide, We Are Social combines cultural intelligence and storytelling with bespoke production. Aiming to own the sports industry, they’ve nailed dynamic visuals paired with smart creator partnerships. Looking to get customers moving? We Are Social could be for you.

⚙️ We Are Social’s Key Services:

We Are Social offer full-service marketing, including: 

• Strategy: We Are Social’s research and strategy teams work in close collaboration at this stage. Their thinking is rooted in audience, category, and cultural conversation. 
• Creative: Fully integrated campaigns, social media and gaming activations, creative storytelling. 
• Production: We Are Social Studios are the agency’s in-house team dedicated to social-first production. 
• Paid media & distribution: Their approach uses strategic distribution to place the right stories in front of the right people.

🌟 Key Clients: Adidas, Samsung, Under Armour, Bose, Meta. 

🧠 OOB’s opinion: We Are Social have been carving out a niche in the sports industry, with bold, dynamic campaigns for industry leaders. 

4. Born Social

Specialists in social-first strategies, Born Social builds campaigns for the brands of tomorrow. Born Social are a B-Corp agency and love to partner with brands who share their values of making a better world. 

⚙️ Born Social’s Key Services:

• Strategy: Social strategy, data and insight, measurement and effectiveness.
• Creative: Motion design, photography, videography, copywriting, art direction, illustration, creative concepting. 
• Media: Paid media planning and management, social commerce. 
• Management: Community management, social listening, reporting and analysis, content calendars. 
• Influencers: Sourcing influencers, contracting and IP negotiation, campaign management, reporting and analysis. 

🌟 Key Clients: Tinder, Nando’s, Chilly’s Bottles, Bravissimo, Uber. 

🧠 OOB’s opinion: Born Social are great at building balanced feeds, with a mix of evergreen and reactive, trend-led content – and they’ve got the numbers to prove it.

5. Spin Brands

Spin are known for being social natives. They create bold campaigns with fearless creativity and social-first content creation. For companies looking to connect with younger audiences, Spin could be a good fit. 

⚙️ Spin’s Key Services:

Spin Brands offer 360 social media services, including:

• Social creative: This includes UGC, graphic design, illustration, motion design, 3D animation, photography, and short-form video. 
• Community management: Customer service setup, on-brand tone of voice, reputation management, crisis control, daily engagement, proactive strategy. 
• Influencers: Spin identify which influencers would be the right fit, cover briefs, deliverables and contracts for you, and track results through reporting. 
• Data and insights: Optimising, refining, and scaling what works. 
• Paid social: In early 2025, Spin launched SpaRk, a service extension created specifically for paid ad creative. It promises end-to-end delivery every 30 days and daily creative insight. 

🌟 Key Clients: Bill’s, instax, Google Cloud, Funkin, Lovehoney. 

🧠 OOB’s opinion: With some fun case studies – like Lewis Capaldi’s Big Sexy Pizza product launch – Spin injects humour into feeds, reaching younger audiences.

6. The Goat Agency

Leaders in influencer marketing, Goat delivers performance-led campaigns with influencer storytelling. They focus on connecting brands with social communities through bespoke strategies, full-funnel marketing, and rigorous data analytics. 

⚙️ Goat’s Key Services:

• Strategy: Goat create influencer strategies to closely align with your brand goals, whether that’s shifting brand perception, building relevance, or driving sales. 
• Discovery: They identify the right creators and influencers to fit your media strategy using their proprietary data tool IBEX and in-house knowledge. 
• Content: A combination of organic influencer content and in-house production. 
• Media: Putting influencer content in media placements to amplify it to key audiences. 
• Commerce: Goat use their deep understanding of commerce platforms to helps brands drive sales and conversions. 

🌟 Key Clients: Heineken, Nivea, IBM, Odeon, Calvin Klein. 

🧠 OOB’s opinion: With some cool content, like their work for Calvin Klein, Goat are experienced at connecting your brand with the right influencers.

7. The Social Element

Focused on brand safety and reputation, Social Element helps global brands stay authentic and protected. They combine proprietary AI tools, third-party data, and expert insights to build smart strategy, social engagement, and long-term brand loyalty. 

⚙️ Social Element’s Key Services:

• Social strategy & playbooks: Fully defining how your brand shows up online. 
• Community Management: UGC celebrations, customer service integration, crisis management and brand protection. 
• Creative: Social Element’s Creative & Innovation team are passionate about getting audiences to stop, stare, care, from scroll-stopping video to AR experiences. 
• Influencer: Working to identify, contract, and collaborate with the right influencers, from micro key opinion leaders and macro industry voices. 
• Training: Social Element also offer training workshops for in-house teams to help them enhance organic and paid social expertise. 

🌟 Key Clients: Visa, The Works, Westfield, Mind, Dr Pepper. 

🧠 OOB’s opinion: With their Dr Pepper partnership as an example, The Social Element are great at building loyal followings through brand personality. 

8. Truffle Social

A creative studio known for polished social content and brand storytelling. They emphasise a unique blend of creativity and data-driven strategy, describing themselves as “fiercely adventurous.” While Truffle’s primary focus is social, they also function as a “venture studio” that partners with founders of consumer lifestyle companies to develop disruptive, brand-led concepts.

⚙️ Truffle’s Key Services:

• Social media management: Includes community management, social advertising, social campaigns, digital campaigns, and strategy.
• Influencer management: Truffle offer bespoke campaign strategy, engaging with key influencers for your brand. 
• Event management: Organising live social at events, product launches etc. 
• Content production: Photo shoots, videography, graphic design, live posting. 

🌟 Key Clients: Swarovski, Spotify, NARS, Puttshack, H&M. 

🧠 OOB’s opinion: Truffle just launched a new website showcasing client work, like their creator-led campaigns for Strong Roots and Hotel Chocolat.

9. Pepper

Founded in 2019 by Forbes 30 Under 30 co-founders, award-winning agency Pepper brings fresh energy to social with innovative campaigns, balancing design-led content with strategy. Pepper is best at creating authentic, editorial-feeling content, with a strong focus on branding and content synergy. 

⚙️ Pepper’s Key Services:

• Influencer marketing: Creator-led campaigns that connect brands to audience through trust and relevance. 
• Organic social: Tailored strategies that build community through culture, platform fluency and brand personality. 
• Paid media: Insight led paid media across platforms. 
• Production: Produce agile, social-first content shaped by strategy, audience insight and creative expertise. 
• Research-led strategy: Using audience intelligence to fuel campaigns with performance-based direction.

🌟 Key Clients: Corona, H&M, Samsung, Oddbox, Trainline. 

🧠 OOB’s opinion: Pepper strike the balance between creativity storytelling and campaign strategy to win authentic engagement.

10. Spring The Agency

Spring the Agency is a female-founded, social-first marketing agency that specialises in helping brands connect with their audiences by building genuine communities. Founded in 2021, this dynamic team of young experts focuses on creating viral content and immersive experiences, both online and IRL, to create buzz and brand love. Spring had one mission: to build the agency they wanted to work for, meaning a joyful approach is at the core of everything they do. 

⚙️ Spring’s Key Services:

• Organic social: Roll-out plans, content calendars, scheduling, copywriting, campaign content, community engagement. Spring starts with the data (social listening, trend forecasting), leaving space to adjust strategy.
• Influencer & brand partnerships: End-to-end influencer marketing, including curating the right talent, negotiating contracts, and ensuring alignment with your brand values.
• Creative strategy & community management
• Content production: End to end content production for social-first posts through to one-off impactful campaigns.
• Events: Whether you need help with just initial planning, or want the whole event fully taken care of, Spring can organise and execute it for you.
• Insights: Spring keeps an eye on brand positioning, cultural insights, industry shifts, and the latest tech advancements to fuel strategy with data-backed ideas.

🌟 Key Clients: PayPal, Tinder, Ellesse, Toni&Guy, e.l.f, Puma. 

🧠 OOB’s opinion: Spring’s all about playfulness, perfect for businesses looking to reach a younger audience and boost online engagement.

How to Choose the Best Social Media Agency in London

London has more social media agencies than anywhere else in the UK. That makes choosing the right one harder, not easier. Here's a practical framework for CMOs and brand leaders evaluating their options.

1. Define what you actually need

Are you looking for always-on social media management, a one-off campaign, influencer strategy, paid social, or all of the above? London agencies range from full-service to niche specialists. Knowing your scope upfront will save you weeks of back-and-forth.

2. Check their own social presence

An agency that can't grow its own channels is a red flag. Look at their Instagram, TikTok, and LinkedIn. Are they producing content that's genuinely scroll-stopping? Are they culturally fluent, or playing it safe? The best agencies eat their own cooking.

3. Ask for case studies in your category

Relevant experience matters. An agency that's nailed beauty brand launches may not understand B2B SaaS, and vice versa. Ask for two or three case studies in your sector — and look for evidence of measurable outcomes, not just 'increased engagement'.

4. Meet the team who'll actually work on your account

London agencies often pitch with senior talent then hand you to juniors. Ask to meet the day-to-day team before signing. Check how many accounts each strategist manages — if it's more than four or five, you're not getting full attention.

5. Understand their reporting cadence

Great agencies report proactively. Ask what metrics they track, how often they report, and what your dashboard looks like on day one. Vanity metrics (likes, followers) are not enough — you want reach, saves, link clicks, and revenue attribution where possible.

6. Consider cultural fit, not just capability

You'll be in weekly (sometimes daily) contact with these people. The best agency relationships feel like an extension of your in-house team. Look for genuine enthusiasm about your brand, a communication style that matches yours, and a willingness to push back when needed.

Once you've shortlisted two or three agencies, run a paid discovery sprint rather than an unpaid pitch. Agencies that do their best thinking for free rarely have the processes to sustain quality long-term.

Benefits of Hiring a Social Media Agency in London

• Local Cultural Insight: Agencies rooted in London understand events, trends, audience quirks, and cultural moments. 
• Early Access to Trends: These agencies are literally at the heart of culture. Buzz, moments, and memes, London agencies stay close to the pulse.
• Time & Resource Savings: They’re experts in content creation, social listening, and platform shifts. A worthwhile investment for any brand wanting to scale. 
• Creative Differentiation: Bespoke ideas that stand out in a saturated digital scene.
• Measurable Impact: With advanced tools and reporting, they predict KPIs and track growth clearly.
• Scalability: From startups to global names, agencies know how to scale brands and generate brand love. 

Other Key Factors When Choosing a Social Media Agency

When deciding which of these agencies to partner with, check these 5 factors:

1. Track Record in Your Industry 📋
2. Their Own Social Presence 📲
3. Creativity and Design Quality 🌟
4. Client Testimonials and Case Studies 🙋‍♂️
5. Service Offering Alignment 🤝

Partnering with one of London’s top social media agencies in 2025 means investing in creativity, cultural relevance, and measurable growth. 

Ready to supercharge your brand’s social presence? Don’t be shy, drop us an email hello@ourownbrand.co 💌