Angel and pre-seed investor

Built by founders,
investing in founders.

We write early cheques into B2B SaaS, AI and PropTech companies across the UK and Europe. As seasoned operators, we bring more than capital: we bring the playbook, the network and the hard-won experience to help you move faster.

Submit your deck Our investment focus →

Who we are

Founders who became funders.

Stratosphere Ventures was built by seasoned operators who have founded, scaled and exited technology businesses. We know the early days are the hardest, which is exactly why we show up then: with capital, context and connections rather than after the risk has been taken.

When you work with Stratosphere, you get direct access to people who have navigated the same decisions you face, in the same markets you are building in. No committees, no lengthy processes.

01
Operator-led, not theory-led
Decades of hands-on experience building and scaling tech businesses. Practical guidance grounded in what actually works.
02
Active, not passive
Product strategy, GTM, hiring, follow-on introductions. Support is bespoke to what you need right now, not a standard package.
03
Founder-first, always
We back people before products. Resilience, domain depth and a clear vision matter more to us than a polished deck.
04
Networks that open doors
Curated access to customers, co-investors and talent across the UK and European tech ecosystem.

Sectors

Where we invest with conviction.

We focus on sectors where our operational experience runs deep. Our edge is the pattern recognition that only comes from having built in these markets ourselves.

B2B SaaS
Workflow automation and vertical software that makes businesses measurably more efficient.
Artificial intelligence
Applied AI solving real operational problems. AI as the product, not just a feature.
PropTech
Technology transforming property transactions, management and investment across the UK.

What we look for

The hallmarks of a Stratosphere founder.

Exceptional founding teams
Vision, resilience and domain expertise. Ideally founders with deep personal insight into the problem they are solving.
Large, growing markets
A real problem worth solving at scale, with a credible path to a meaningful share of a sizeable opportunity.
Early proof of pull
An MVP or prototype with signs that real users care: first revenue, early pilots or meaningful waitlist momentum.
A scalable business model
Clarity on how the business grows: unit economics in mind, go-to-market instinct and a realistic path to seed.
Founder-market fit
We want to understand why you are the right person to solve this, in this market, at this moment.
Appetite for partnership
We are co-pilots, not spectators. Founders who want to leverage our experience get the most from working with us.

Building in B2B SaaS, AI or PropTech?

We review every submission. If there is a fit, we move quickly. Send us a short note and your deck.

Submit your pitch
For founders
pitches@stratosphere.ventures

Send us your deck and a short introduction. We review every submission.

General enquiries
info@stratosphere.ventures

For press, partnerships and all other enquiries.