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Why investors back narratives, not numbers

Written by Graham Charlton | 06 November 2025

If you’ve ever sat through a pitch deck overloaded with financial models and 10-point growth forecasts, you’ll know how easy it is to get lost in the numbers.

Founders often assume that investors make decisions based on spreadsheets alone.  

However, many successful fundraisers lead with why and where they’re going, not just what they’re building.

“Investors are not buying numbers, they’re buying belief.” - Paul Graham of Y Combinator

Numbers confirm potential, but stories create conviction.

This article explores why narrative-first fundraising works, how to build one that’s credible and compelling, and what investors really want to hear from early-stage founders. 

Why investors buy belief, not just valuation

At the early stages of any business, financial data is thin. Forecasts are educated guesses. So investors look for something else: clarity of vision and confidence of execution.

A 2020 study from Stanford Graduate School of Business found that 78% of venture capitalists rely on the founders and their stories as much as hard data when making early investment decisions. 

Investors often ask three questions that no spreadsheet alone can answer:

  1. Does this founder deeply understand a real problem?
  2. Can they articulate a compelling future where they solve it?
  3. Do I believe they’ll attract the right people to make it happen?

Those are story questions, not accounting ones, and that’s why your investor deck should be a story backed up with data. 

The anatomy of a powerful investor story

A great narrative doesn’t replace data, it gives the data meaning. 

It helps investors see why the numbers matter and how they fit into a bigger picture.

Think of your fundraising story as having three connected layers: purpose, proof, and pathway.

1. Start with purpose

Every enduring business begins with a conviction. Simon Sinek’s Golden Circle model still resonates: people buy why you do it before they buy what you do.

This why doesn’t have to be grandiose. It just needs to connect a real-world problem with a founder’s belief.

For example, ZOE, the UK health-tech startup, built its narrative around one insight:  ‘What if nutrition worked for everyone?’

This helped them to turn a clinical research project into a purpose-driven brand now valued at over £250m.

A clear purpose makes your story coherent. It anchors your market, team, and product in something bigger than short-term numbers.

2. Add proof 

Investors still need evidence, but the way you present it should flow naturally from your story.

Don’t drop random stats; narrate your progress. Show how early traction validates your vision.

For example:

  • “We grew MRR 50% in Q1” is interesting.
  • “We grew MRR 50% after automating onboarding, proving our model scales without extra headcount” tells a story of capability and learning.

HM Treasury data cited in Vestd’s Business Case for Launching a Share Scheme shows that companies that share ownership grow 2.5% to 4.1% faster than peers.

This is because ownership aligns people around a shared story. That same logic applies to fundraising. Alignment creates momentum.

When investors see alignment between vision, execution, and results, they see leadership.

3. End with pathway

A good investor story builds tension and release. You’ve explained what you believe and proved it’s working. Now show where it leads.

Outline a clear path from today’s metrics to tomorrow’s ambition. This isn’t about overpromising, it’s about framing growth as a journey already in motion.

Investors are drawn to companies that can articulate how growth capital will accelerate a defined trajectory, not invent a new one.

End your pitch with momentum. Investors should feel that if they don’t act now, they’ll miss the next chapter.

Lessons from startups who led with story

A compelling narrative alone doesn’t guarantee investment or growth. 

Each of the UK startups below had strong execution, product-market fit, and timing on their side. 

Their stories made it easier for investors, customers, and employees to believe faster and commit sooner.

Monzo’s early success wasn’t driven by marketing budgets or technical innovation alone. It was fueled by community. 

From the start, the company invited customers into its journey, sharing open product roadmaps, public waitlists, and a culture of transparency that made users feel part of the mission.

When Monzo launched its crowdfunding campaign in 2016, it raised £1 million in 96 seconds 

Revolut’s founders didn’t invent digital banking, but they did master clarity. Their pitch (One app for all your money) became both a slogan and a strategy. It told investors, in five words, what the product would become and how users would feel.

That coherence made it easier for investors to visualise the opportunity and for the team to stay aligned as they scaled. Within six months, Revolut closed its Series A. 

The company’s execution and market timing were critical, but the story made the opportunity legible. It gave investors a simple, memorable vision of a complex product.

Octopus Energy’s £6 billion valuation didn’t come from a feel-good slogan. But its story (Better energy for people and the planet) gave purpose to every proof point.

In an industry riddled with distrust, Octopus’s mission created a moral and strategic throughline that attracted customers and investors alike. 

In 2021, Al Gore’s Generation Investment Management led a £438 million round, citing Octopus’s ‘tech-led path to decarbonisation’ as a key reason for backing.

Octopus paired its story with data, proving that its stated purpose wasn’t a veneer. It was the framework that gave the numbers meaning.

None of these companies succeeded because of story alone, but each used narrative as a strategic asset to translate ambition into belief.

That’s what storytelling does in fundraising. It doesn’t create success, but it helps investors see the potential sooner,  and believe in it more deeply.

How to build your investor narrative

Here’s a practical framework. One you can use to turn your deck into a coherent story:

  1. Anchor with insight. What problem did you spot before others?
  2. Frame your purpose. Why does solving it matter now?
  3. Build tension. Show what’s broken, and what happens if it’s not fixed.
  4. Provide evidence. Use your traction, user stories, or partnerships as validation.
  5. Resolve with momentum. Where you’re going next, and why investors should want in.

When a company’s mission, ownership, and performance are joined by a single story, everything compounds — growth, culture, and trust.

Use the same logic with investors and tell a story that compounds belief.

Common storytelling pitfalls to avoid

  • Overhype without substance. Ambition isn’t a substitute for evidence.
  • Data dumps. Too many metrics dilute your message.
  • Founder ego. Make yourself the narrator, not the hero. 
  • Inconsistency. If your story changes every meeting, investors lose trust fast.

The most credible story is one that stays true over time.

Summary

Numbers help investors measure opportunity. Stories help them believe in it.

The best founders connect purpose to progress and make their audience feel part of that mission. 

So before you polish your forecast, step back and ask:

  • Does our story make people care?
  • Does every slide support that story?
  • Would an investor believe in this even if the numbers changed?

If the answer is yes, your fundraising is already ahead of the curve.