We have done it. Now we help others do it too.
Everyone in our network has built something, led something, or broken something - and learned what actually works as a result. Not from a textbook. From the messy, brilliant, frustrating reality of doing it.
The difference is what we do with that experience. We turn it into something you can actually use - practical, honest, tailored to where you are right now.
Entrepreneurship is a lot of guesswork. We're honest about that.
There is no formula for innovation. If there were, everyone would use it.
What we believe - because we have seen it work, over and over - is that there are skills, mindsets and approaches that make the guesses better. That help people test ideas faster, fail cheaper, and build things that actually land.
We are here to help you think differently, act faster, and lead more effectively - whatever the world throws at you next.
Just some of the people who make it happen
Every trainer, coach and facilitator in our network is a practitioner first. They bring their own hard-won experience into every session - which is what makes the difference between training that sticks and training that gets forgotten by the time everyone's back at their desks. This is just a selection of our network - get in touch to find out who would be the best fit for your programme
Hattie Willis - GuessWorks Founder
Venture Builder, coach, trainer, speaker and facilitator. Has worked with Lloyds Banking Group, DHL, Experian, Rambøll, Thales Alenia Space and many more. Formerly Head of Training at Rainmaking Innovation.
Andy Ayim
Serial founder, investor and creator of Angel Investing School. Andy is an MBE and has supported leaders at Google, Uber, Diageo, Tesco, Wise and many more - and brings deep experience as a product leader, founder and investor into every session he runs.
Felicity Halstead
Founder of GoodWork, an inclusive youth employment programme. Felicity brings a deep commitment to making entrepreneurship and opportunity accessible to everyone - not just the people who already have a head start.
Gurvir Riyat
Co-founder of The BAE HQ , Gurvir brings a background in private markets across Pantheon Ventures, Kindred Capital and Federated Hermes, spanning Private Equity and Venture Capital. Through The BAE HQ he has supported hundreds of founders with fundraising and investment expertise, and built a community that reaches thousands across the UK.
Neda Sahebelm
Expert in inclusive employment, social mobility and early careers. Has built and scaled teams with 90%+ retention and 50% gender/ethnic diversity. Brings a rigorous, human-centred approach to every programme.
Caroline Van Den Bergh
Over 20 years in technology and product innovation across startups, scale-ups and corporate brands. Co-founder of Lunos. Diagnosed with dyslexia and ADHD, Caroline has built her career by turning those differences into strengths - and now helps founders do the same. Specialist in turning ideas into growth across product, marketing, strategy and commercial development.
Daniel Kolodziej
Has mentored leaders at Google, IKEA and Ford and led corporate innovation across multiple sectors including Consumer Health, Logistics, Telco and Financial Services. Dan brings deep expertise in Lean, Agile, Design Thinking and Human Centred Design - and makes it all feel genuinely usable.
Lucy Bulley
Fractional COO with a decade in financial services scaling businesses within regulated environments. Founded her own property management company in 2020 - recently acquired. Has worked in 40+ startups including her own. Contributed to Google StartUp Academy, Barclays Eagle Labs, FinTech Wales, Plexal and the Welsh Government Export Cluster. Associate tutor at Cardiff Metropolitan University on enterprise and entrepreneurship.
Our story
Hattie stumbled into entrepreneurship by accident at university - and loved it immediately. The energy, the creativity, the feeling of building something from nothing.
After years working in corporate accelerators and venture builders, she became convinced that the skills that make great founders - adaptability, creativity, commercial thinking, resilience - are the most valuable skills anyone can have. And that the earlier people learn them, the better.
She started GuessWorks to close the gap. Not just to teach these skills, but to build a proper ecosystem - one that connects schools, universities, accelerators and organisations so that learning compounds across every stage. School students meet real founders. University founders become mentors. Corporate innovators inspire the next generation.
That loop is what GuessWorks is building.
Ready to do something that actually works?