Best Influencer Marketing Agencies in the UK
Running influencer campaigns properly means more than DMing people with big followings - it's sourcing creators whose audience actually matches yours, negotiating fair briefs and contracts, and proving the campaign did something beyond nice-looking content. Influencer marketing agencies manage that whole process, from vetting creators for real engagement to tracking sales or leads after the posts go live.
Showing 10 Influencer Marketing agencies across the UK
Colossal Influence
London
Colossal Influence is a premier influencer marketing agency with over 12 years of experience in talent management.
Dont Cry Wolf
London
Don't Cry Wolf is a bold communications agency blending PR, social media, and creative campaigns to generate buzz for challenger brands. They specialise in earned media strategies that cut through the noise and deliver standout brand moments.
Earnest
London
Earnest is an award-winning B2B marketing agency with offices in London and New York.
Full Fat
London
Full Fat is a PR and social media agency known for creating culturally relevant campaigns that drive earned media coverage. They specialise in gaming, entertainment, and lifestyle brands, delivering impactful activations that generate buzz.
Gastronomic Agency
London
Gastronomic Agency is a specialist food and beverage marketing agency creating mouth-watering campaigns for restaurants, food brands, and hospitality businesses. They deliver social media, PR, and content marketing with deep expertise in the culinary sector.
Social Lipstick
London
Social Lipstick excels at User Generated Content for TikTok and Instagram, specialising in fashion, sportswear and FMCG.
The Hot Plate
London
The Hot Plate is a specialist food and drink marketing agency creating standout campaigns for restaurants, food brands, and hospitality businesses. They bring deep industry expertise to PR, social media, and brand activations in the food sector.
Uprated
London
Uprated delivers AI marketing, B2B marketing and eCommerce solutions for education, fashion and government sectors.
Viralify Digital Marketing Agency
London
Viralify is a digital marketing agency specialising in social media growth, viral content strategies, and influencer partnerships. They help brands build engaged communities and create shareable content that amplifies reach across digital channels.
We Are SNS
London
We Are SNS is a UK-based social media agency specialising in TikTok and Instagram. They offer Social Media Management, Influencer Marketing and Content Creation to help brands build authentic audiences and drive engagement across social platforms.
What is Influencer Marketing?
Influencer marketing agencies plan and run paid or gifted campaigns with third-party social media creators on a business's behalf. This starts with creator sourcing and vetting - checking audience demographics, genuine engagement rates versus bought followers, and past brand fit - then moves into outreach, negotiation and contracts covering usage rights, disclosure requirements (under ASA and CMA rules) and deliverables. Agencies typically write creative briefs that give creators enough direction without stifling their authentic style, manage the relationship and approvals process, and handle payment or gifting logistics. After campaigns run, they track performance through affiliate links, discount codes, UTM-tagged content or platform-provided analytics, reporting on reach, engagement and, increasingly, attributable sales or leads rather than vanity metrics alone. This is distinct from social media management, which runs a brand's own channels and content rather than brokering relationships with external creators.
Why Hire a Influencer Marketing Agency?
- Creator vetting for genuine engagement and audience fit, not just follower count
- Contracts covering usage rights, exclusivity and ASA/CMA disclosure compliance handled properly
- Access to creator networks and rate benchmarks, avoiding overpaying for inflated influencer quotes
- Campaign briefs that balance brand messaging with a creator's authentic style and tone
- Performance tracking via affiliate links, discount codes or UTM tagging rather than reach alone
- Experience across scales, from micro and nano creators to macro-influencers and talent-agency-repped names
Frequently Asked Questions
How much does influencer marketing cost in the UK?
Costs vary enormously by creator tier. Nano and micro-influencers (1,000-50,000 followers) typically charge £50-£500 per post or work on gifted/commission terms. Mid-tier creators (50,000-500,000) often charge £500-£5,000 per campaign post. Macro and celebrity-level influencers can charge £10,000-£50,000+ per post. On top of creator fees, agency management fees usually run 15-25% of campaign spend, or a flat retainer of £1,500-£5,000 a month for ongoing programme management.
How do I choose the right influencer marketing agency?
Ask what vetting process they use to check engagement authenticity, not just follower numbers - fake followers and engagement pods are a real problem. Ask for examples of past campaigns with actual outcome data (sales, leads, sign-ups), not just reach and impressions. And check whether they have direct creator relationships or simply broker through third-party platforms, which affects both cost and creative control.
How long does an influencer campaign take to set up?
A single-creator campaign can be sourced, briefed and posted within 2-4 weeks. Larger multi-creator campaigns, especially ones needing contracts, product samples and coordinated posting schedules, typically take 6-10 weeks from brief to go-live. Building an always-on ambassador programme with recurring creators is a longer-term undertaking, usually planned in quarterly cycles.
What's the biggest misconception about influencer marketing?
That bigger follower counts automatically mean better results. In practice, micro-influencers often deliver higher engagement rates and better cost-per-result because their audiences are smaller but more genuinely engaged. The other common misconception is that it's separate from performance marketing - properly run campaigns should be trackable against sales or leads with UTMs or discount codes, not judged on reach and follower comments alone.
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