California Ventures · Est. for Founders
Growth Partners
For Ambitious Founders
Helping startups scale from £0 to £1M+ per month through growth marketing, strategic advisory, fractional CMO leadership and investor introductions.
Trusted By Ambitious Founders
What we actually do
Most agencies optimise ads. We build companies.
California Ventures works alongside founders to solve the challenges that actually determine growth. We become an extension of your leadership team.
Positioning
Customer Acquisition
Conversion Optimisation
Brand Building
Retention
Team Growth
Fundraising
Strategic Direction
The Numbers
Built for scale.
£11.5M+
Capital Raised
50,000+
Customers Acquired
Millions
Revenue Generated
Multiple
Startup Exits Supported
Services
How we help founders scale.
Growth Marketing
- Meta Ads
- Google Ads
- Creative Strategy
- Landing Pages
- Email Marketing
- Analytics
Fractional CMO
- Growth Leadership
- Marketing Strategy
- Hiring
- Forecasting
- Board Reporting
Strategic Advisory
- Positioning
- Go-To-Market
- Growth Planning
- Commercial Strategy
Capital Raising
- Investor Introductions
- Pitch Deck Reviews
- Fundraising Support
- Angel Network Access
Selected Work
Selected growth partnerships.
RapidTest
At-home healthcare brand scaling rapidly across the UK and Europe.
Resooma
Growth strategy support through acquisition and scale.
Roots Allotments
Customer acquisition and growth acceleration.
We Are Luxe
Premium ecommerce growth and brand positioning.
Unplugged
Strategic growth support and customer acquisition.
Founder
Meet Jack Jenkins.
Jack Jenkins is an entrepreneur, growth strategist and investor who has spent the last decade helping founders raise capital, acquire customers and scale businesses.
Having worked across ecommerce, healthcare, consumer brands and technology startups, Jack created California Ventures to bring together strategy, execution and investment.
“The best growth happens when founders have access to operators who have actually built companies.”
Investment
We back companies we believe in.
Unlike traditional agencies, California Ventures occasionally invests directly into the businesses we support. We combine capital, growth expertise, strategic guidance and investor introductions — because the best partnerships happen when incentives are aligned.
Ready when you are
Ready to scale?
Whether you need a fractional CMO, growth partner, strategic advisor or investor introduction — let's talk.