Why performance-focused brands are choosing Charlie Oscar
When it comes to finding the right influencer marketing agency, the sheer number of options can be overwhelming. A quick search for “Top 10 Influencer Marketing Agencies in the UK 2025” returns millions of results – all with bold claims and big promises.
But here’s the reality: very few influencer agencies are built to drive measurable business growth. Many focus on surface-level metrics – reach, likes, follower counts – without tying activity back to commercial outcomes.
At Charlie Oscar, we believe influencer marketing should be held to the same standards as any other channel in your mix. It should be strategic, performance-led, and fully accountable.
So, if you’re researching the Top 10 Influencer Marketing Agencies in the UK in 2025, we’ve compiled this comprehensive guide to the standout names – whilst showing you why more brands are choosing Charlie Oscar as their growth partner.
1. Charlie Oscar (London)
The performance-led influencer agency that actually moves the numbers
Influencer marketing has matured — and so have the expectations from ambitious brands. At Charlie Oscar, we’ve built an agency specifically designed for this new era: one where influencer content is not just creative, but commercially accountable.
Backed by a founding team with leadership experience at Apple, Uber, Meta, and Heineken, we approach influencer marketing with a blend of creativity, media expertise and marketing science.
Our proprietary platform, COmpass, is a full-funnel measurement suite that reveals the true value and ROAS of influencer activity across both digital and offline touchpoints.
What sets us apart:
- 380% increase in new customer acquisition
- Influencer CAC 40% below industry benchmarks
- UGC creative 25% more effective than traditional ad campaigns
- Millions in incremental revenue attributed directly to influencer content
Our Specialisms:
We specialise in helping brands unlock growth through influencer marketing that works with your wider media mix – not in isolation.
- Bespoke influencer campaigns across Beauty, Fitness, Lifestyle and DTC
- Integrated media + influencer + CRM strategy for true channel synergy
- Full-funnel attribution and forecasting via our in-house platform, COmpass
- Always-on execution, delivered by a senior team with experience at Apple, Meta, Uber, and Heineken
- Influencer content that converts – supported by creative testing, paid amplification, and smart optimisation
Whether you’re launching a new DTC product, scaling performance across channels, or looking to integrate influencer into a broader growth strategy – we offer both the insight and execution to make it happen.
We’re based in London and trusted by global brands and high-growth scale-ups.
Other Leading Influencer Marketing Agencies in the UK
Whilst we’re proud of what we offer at Charlie Oscar, we also recognise the excellent work being done across the industry.
Here are other agencies that feature prominently when brands research the Top 10 Influencer Marketing Agencies in the UK (2025):
2. The Social Shepherd (Bath)
Award-winning paid and social agency for DTC brands. Known for its in-house creative production and paid media strategies. Clients include Uniqlo and Neptune.
3. SEEN Connects (London)
A culturally aware influencer agency blending creativity and commerce. Works with Nike, Bumble and Panasonic.
4. The Goat Agency (London)
One of the biggest names in influencer marketing. Known for integrated influencer and performance media campaigns.
5. EngageHub (Manchester)
Specialists in micro-influencer and UGC campaigns for lifestyle and eCommerce brands.
6. Influencer (London)
A tech-forward influencer agency with strong enterprise partnerships and a focus on platform integrations.
7. Digital Voices (London)
Experts in long-form influencer content, especially YouTube-focused campaigns.
8. Kairos Media (London)
A leader in gaming, Gen Z, and youth culture campaigns, with integrated influencer activations.
9. The Fifth (London)
A content-led influencer agency known for pairing talent management with campaign strategy.
10. Disrupt (London)
Performance-first influencer campaigns built around scalable paid amplification and creative testing.
What Top 10 Influencer Marketing Agencies are featured in the UK (2025)?
When evaluating the Top 10 Influencer Agencies in the UK (2025), Charlie Oscar have identified that the best agencies consistently deliver:
Proven performance data – not just engagement metrics, but demonstrable business impact that ties influencer activity to revenue growth.
Platform expertise – from TikTok’s algorithm to YouTube’s long-form content opportunities, understanding how and when to leverage each channel for maximum effect.
Creative strategy – the best influencer content is built around brand purpose and commercial objectives, not just trending topics or viral moments.
Measurement that goes beyond last click – sophisticated attribution tools that reveal the true influence of content across the entire customer journey.
Cultural relevance – campaigns that feel native to the platform and authentic to the influencer’s audience, rather than obviously branded content.
Why More Brands Choose Charlie Oscar from the Top 10 Influencer Marketing Agencies in the UK (2025)
The most exciting thing about influencer marketing in 2025 is how much potential it still holds – but only for brands and agencies willing to evolve beyond vanity metrics.
At Charlie Oscar, we don’t treat influencer as a silo. We embed it into a wider growth strategy, pairing it with paid media, CRM, and conversion optimisation. Our teams work shoulder-to-shoulder with yours, often as an extension of your in-house function.
Whether you need help designing your first influencer programme or want to scale an existing one with more precision, we’re ready to help.
When brands are researching the best influencer agencies, they consistently find that Charlie Oscar offers the perfect combination of creative excellence and commercial accountability.
If you’re serious about driving growth through influencer marketing – not just engagement – we’d love to show you what’s possible.
Drop us a line at charlieoscar.com.
