Jonathan Jackson, CEO of Previsico, on Adopter's Scaling Green-Tech podcast.
July 29, 2026

Episode 30: Jonathan Jackson (Previsico) - Flood Risk in a Changing Climate

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Episode summary

Jonathan Jackson, CEO of Previsico, discusses forecasting surface water flooding and scaling a university spin-out on Episode 30 of Scaling Green Tech, a podcast by Adopter.

Previsico gives property-level flood warnings up to 48 hours ahead. Jackson explains that surface water is now close to 60% of UK flood risk, driven by a changing climate, urbanisation and ageing drainage. The company began as a Loughborough University spin-out built on Professor Dapeng Yu's flood model, with the UK government as its first customer, which reversed the usual startup order of finding a problem before building a product. Jackson traces the commercial journey from Innovate UK grant funding and an angel round through venture backing from Foresight Group, and into the US via a customer-led, site-by-site expansion rather than a country-by-country one.

This episode is relevant for climate adaptation founders, deep tech and university spin-out teams, insurtech and climate tech investors, and B2B founders working out how to sell a preventative product to a market that underestimates its own risk.

Guest profile

Jonathan Jackson is the CEO of Previsico. He describes himself as an entrepreneur rather than a scientist, having started in telecoms before building several businesses that moved offline industries online, including Farming Online, which he describes as the UK's longest-running B2B internet business. He joined Previsico after becoming entrepreneur in residence at Loughborough University, where he met the company's scientific founders and helped spin the business out.

Previsico is a flood forecasting company that provides property-level surface water flood warnings up to 48 hours in advance, combining a hydrodynamic flood model with real-time weather data and IoT sensors. The company was spun out of Loughborough University and works with insurers, corporates, councils and housing associations in the UK and, increasingly, the US.

Company website: https://previsico.com/

Find Jonathan Jackson on LinkedIn

Key takeaways

  • Surface water flooding, where rainfall exceeds the ground's ability to absorb it, now accounts for close to 60% of UK flood risk, more than main river and coastal flooding combined, according to Jackson.
  • Previsico launched with its product already built and the UK government as its first customer, reversing the usual startup sequence of validating a problem before building the solution.
  • As a university spin-out, the company's first funding came from an Innovate UK grant plus investment from Loughborough University, followed by an angel round from Advantage Business Angels, many of whom invested because they had personally experienced flooding.
  • The company sequenced its fundraising around proof points, using its first two insurer contracts, Zurich then Liberty, as the evidence base to raise venture capital from Foresight Group in 2021.
  • Jackson found US investors lighter-touch on due diligence than UK investors, and notes that time to a first term sheet stretched from as little as two weeks in stronger markets to roughly six months over the last year to 18 months.
  • Previsico abandoned country-by-country expansion in favour of a client-led model, setting up individual sites for global customers such as Burger King rather than building out a whole national market first.
  • A joint report Previsico produced with Airmic and InsTech found that only around 10% of large organisations surveyed have a flood plan, which reframed the company's job as market education rather than pure product sales.

topics covered

  • Explaining flood forecasting simply, and the surface water flooding gap
  • Why surface water is now the biggest and hardest-to-predict UK flood risk
  • Launching with the product built and the government as first customer
  • Working with academic founders versus commercial and developer teams
  • Raising as a university spin-out: grants, angels and proof points
  • Sequencing fundraising around insurer contracts and venture rounds
  • Differences between UK and US investors and due diligence
  • Customer-led international expansion versus country-by-country growth
  • Marketing a preventative product to a market that underestimates its risk
  • Case studies and social proof as the core marketing asset
  • Selling climate adaptation without relying on climate belief
  • Building a commercially driven business with a social mission

Frequently asked questions

What is surface water flooding, and why is it hard to forecast?
Should a startup build the product first or validate the market first?
How do climate tech startups raise money at each stage?
What is the difference between selling to UK and US investors and customers?
How do you market a product that prevents a problem people underestimate?
Why is climate adaptation attracting interest even from climate sceptics?

About Scaling Green-Tech

Scaling Green-Tech by Adopter is a podcast for people shaping the future of climate technology - founders, investors, and ecosystem leaders at the forefront of adaptation and resilience solutions. As part of Adopter’s mission to accelerate the adoption of high-impact climate innovation, the podcast aims to amplify real voices and practical insights that can help others navigate the startup journey. These conversations go beyond the hype to bring real, unfiltered stories - the wins, the roadblocks and everything you need to know in between.

Read the full transcript here
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