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.

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 MBE

Serial founder, investor and creator of Angel Investing School. An MBE who has supported leaders at Google, Uber, Diageo and Tesco, bringing a product, founder and investor lens to 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, with a background in private markets spanning Private Equity and Venture Capital. Has supported hundreds of founders with fundraising and built a community reaching 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 corporates. Co-founder of Lunos. Diagnosed with dyslexia and ADHD, she turns those differences into strengths, and helps founders too.

Daniel Kolodziej

Has mentored leaders at Google, IKEA and Ford, and led corporate innovation across Consumer Health, Logistics, Telco and Financial Services. Brings Lean, Agile and Design Thinking expertise, and makes it usable.

Lucy Bulley

Fractional COO with a decade in financial services, scaling businesses in regulated environments. Has worked in 40+ startups including her own, and contributed to Google StartUp Academy, Barclays Eagle Labs and Plexal.

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.