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Agency Rankings · Updated August 2026

The 10 Best Fitness Influencer Marketing Agencies in UK

Compare the top fitness 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
OOB

OOB

London, England · Founded 2018 · 10–49 people · hypeandhoney.com ↗

OOB is a social-first agency creating strategy-led content, influencer and culture campaigns for lifestyle, health and fitness brands, with clients including Natural Cycles and Eight Sleep.

Avg. rating 5 (58 reviews) Named clients 20 Published case studies 30 Min. budget published
89IC Score / 100
2
M3.agency

M3.agency

Birmingham, England · Founded 1999 · 50–249 people · m3.agency ↗

M3.agency builds tailored digital marketing strategies—SEO, PPC, paid social and content—to grow sports and fitness brands’ reach and engagement, with clients like Aston Villa and Wolverson Fitness.

Avg. rating 5 (21 reviews) Named clients 20 Published case studies 17 Min. budget published
86IC Score / 100
3
Red Rag Marketing

Red Rag Marketing

Crewe, England · Founded 2019 · 2–9 people · redragmarketing.com ↗

Red Rag Marketing builds tailored social media and lead-generation campaigns for small businesses, using data-driven ad optimisation and systematic testing; clients include JWC Health & Fitness.

Avg. rating 4.9 (83 reviews) Named clients 18 Published case studies 18 Min. budget published
83IC Score / 100

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4
Bigg

Bigg

Bristol, England · Founded 2006 · 10–49 people · bigg.co.uk ↗

Bigg provides ROI-focused digital marketing for fitness brands, running conversion-driven SEO, paid media, content and organic-growth campaigns—clients include Snap Fitness and Superhuman Sports.

Avg. rating 4.8 (24 reviews) Named clients 19 Published case studies 6 Min. budget published
83IC Score / 100
5
GA Agency

GA Agency

London, England · Founded 2019 · 50–249 people · ga.agency ↗

GA Agency delivers in-house multilingual SEO, AI-driven search and full-funnel paid media for global brands, executing localized search and paid campaigns for fitness clients like Technogym.

Avg. rating 5 (21 reviews) Named clients 20 Published case studies 10 Min. budget published
82IC Score / 100
6
Bound to Prosper

Bound to Prosper

London, England · Founded 2021 · 2–9 people · boundtoprosper.com ↗

London-based, women-founded PR agency specialising in lifestyle and wellbeing brands, offering influencer marketing, digital press office, PR and thought‑leadership to boost visibility for clients like Wild Nutrition and Planted.

Avg. rating 5 (15 reviews) Named clients 19 Published case studies 11 Min. budget published
81IC Score / 100
7
Swype® Creative Digital Agency

Swype® Creative Digital Agency

Leeds, England · Founded 2023 · 2–9 people · swypecreative.com ↗

Swype® delivers branding, website design, SEO and paid-media campaigns for sport and fitness brands, crafting bespoke creative strategies for clients such as Elevate S&C and Sheffield Hallam University.

Avg. rating 5 (29 reviews) Named clients 18 Published case studies 18 Min. budget published
80IC Score / 100
8
Growthcurve

Growthcurve

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

Growthcurve builds data-driven growth and creative campaigns that combine engineering, analytics and content to scale fitness and local service brands — clients include Olympic Combat and Fanatics.

Avg. rating 4.9 (42 reviews) Named clients 15 Published case studies 4 Min. budget published
80IC Score / 100
9
Hummingbird Digital Ltd

Hummingbird Digital Ltd

Peterborough, England · Founded 2002 · 10–49 people · hummingbird.agency ↗

Hummingbird Digital builds social-first, data-led campaigns—content, influencer partnerships, performance marketing and go-to-market strategy for wellness, travel and DTC brands like Biobalance and Natural Health Market.

Avg. rating 5 (52 reviews) Named clients 13 Published case studies 12 Min. budget published
78IC Score / 100
10
CEEK

CEEK

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

CEEK is a full-service digital agency delivering strategy, execution, growth and insights for consumer and lifestyle brands, running influencer, social and performance campaigns for clients like BXR and Quorn Stone.

Avg. rating 5 (87 reviews) Named clients 16 Published case studies 9 Min. budget published
76IC 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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