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Agency Rankings · Updated August 2026

The 10 Best YouTube Influencer Marketing Agencies in UK

Compare the top youtube influencer marketing agencies in United Kingdom for 2026 — ranked by client reviews, pricing, campaign results, and verified brand clients

1,000+ agencies evaluated 6 scoring factors 15,000+ client reviews analyzed
What the score bar shows
Client reviews 25% Verified clients 20% Campaign results 15% Pricing transparency 10% Team size and seniority 10%
★ Best Overall
1
Accuracast

Accuracast

London, England · Founded 2004 · 10–49 people · hypeandhoney.com ↗

Accuracast delivers international digital marketing and performance strategy for brands expanding across markets, running multilingual paid social, programmatic and data-led campaigns for clients like Vodafone and American Express.

Avg. rating 5 (30 reviews) Named clients 20 Published case studies 7 Min. budget published
85IC Score / 100
2
Spin Brands

Spin Brands

London, England · Founded 2016 · 50–249 people · spinbrands.com ↗

Spin Brands is a creative-first social agency that blends strategy, data and content production to run YouTube influencer and cross-platform campaigns for global consumer and lifestyle brands such as Google and Diageo.

Avg. rating 4.8 (59 reviews) Named clients 20 Published case studies 14 Min. budget published
85IC Score / 100
3
Favoured

Favoured

London, England · Founded 2017 · 10–49 people · favoured.co.uk ↗

Favoured is a performance-focused marketing agency led by a former Apple marketing lead, offering full-funnel strategy and in-house video/TikTok production for brands like Durex UK and teapigs.

Avg. rating 4.6 (40 reviews) Named clients 20 Published case studies 61 Min. budget published
82IC Score / 100

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4
Growthcurve

Growthcurve

London, England · Founded 2017 · 10–49 people · growthcurve.co ↗

Growthcurve blends data, engineering and creative teams to craft tech-driven influencer and growth campaigns for digital-first brands, working with clients such as Coinbase and Marmalade Game Studio.

Avg. rating 4.9 (42 reviews) Named clients 15 Published case studies 4 Min. budget published
79IC Score / 100
5
303

303

London, England · Founded 2015 · 10–49 people · 303.london ↗

303 is a creative-led digital marketing agency for premium brands, combining creative content, media buying, social and email with performance strategy for clients such as Bonhams and Burlington Arcade.

Avg. rating 4.2 (16 reviews) Named clients 10 Published case studies 6 Min. budget published
79IC Score / 100
6
CEEK

CEEK

Victoria, London, England · Founded 2016 · 10–49 people · ceek.co.uk ↗

CEEK is a full-service digital agency that runs end-to-end YouTube influencer campaigns and growth-focused content for consumer and hospitality brands like The Savoy London and Disney.

Avg. rating 5 (87 reviews) Named clients 16 Published case studies 9 Min. budget published
78IC Score / 100
7
Greenlight

Greenlight

London, England · Founded 2001 · 50–249 people · greenlightdigital.com ↗

Greenlight is a digital commerce agency offering search, programmatic, SEO, content, creative, UX and e-commerce systems work, serving consumer and retail brands such as Currys and Montblanc.

Avg. rating 4.3 (81 reviews) Named clients 15 Published case studies 15 Min. budget published
75IC Score / 100
8
topflight Agency

topflight Agency

Leeds, England · Founded 2019 · 2–9 people · topflightagency.com ↗

topflight Agency combines SEO, PPC, web design, link-building and social media advertising to support UK YouTube influencer campaigns for brands such as Sportmadness and VetPartners.

Avg. rating 5 (6 reviews) Named clients 6 Published case studies 3 Min. budget published
70IC Score / 100
9
AND THE NEW

AND THE NEW

London, England · Founded 2021 · 10–49 people · andthenew.agency ↗

AND THE NEW is a London-based social creative agency delivering content strategy, production and social media management for sports, gaming and entertainment brands, working with clients like Mercedes‑AMG Petronas F1 Team and SAP.

Avg. rating 5 (1 reviews) Named clients 6 Published case studies 4 Min. budget published
70IC Score / 100
10
JapanBuzz

JapanBuzz

London, England · Founded 2006 · 10–49 people · japanbuzz.info ↗

JapanBuzz is a bilingual English–Japanese agency that runs influencer campaigns, social strategy, content and paid advertising to help international brands like Nike and IKEA enter and engage Japan.

Avg. rating 5 (1 reviews) Named clients 12 Published case studies 8 Min. budget published
70IC Score / 100

How we score agencies

Every agency gets an IC Score out of 100, built from seven weighted factors. All inputs come from publicly available information — review platforms, the agencies' own websites. Scores are refreshed monthly.

25%

Client reviews

Average rating across major review platforms, adjusted for review volume so 5 reviews can't beat 300.

20%

Verified clients

Named clients and brand logos we could verify against public sources.

15%

Campaign track record

Published case studies with concrete, checkable results.

10%

Pricing transparency

Published pricing, minimum budgets, or rate ranges score higher than "contact us."

20%

Niche specialization

Share of public work and case studies in this specific niche.

10%

Team & stability

Years in operation and team size, from public company information.

Scores reflect publicly available information as of August 2026 and are opinions based on the methodology above, not statements of fact about service quality.

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