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About us

Meet the team

Impact is bursting with energetic, talented and passionate people who want to make a difference. Our people work from over 30 global locations.

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David Williams, Impact International
UK
David andWilliams
The Boss!

I co-founded Impact in 1980 to explore adventure and experiential learning in people development. It worked! We now inspire and develop people worldwide. Shared values, a common purpose and a spirit of adventure bind us together. With over 200 colleagues working in the UK, Europe, America and Asia Pacific, we have a solid reputation for enabling clients to build leadership capacity and navigate complex change. To stay grounded, I rear rare breed cattle and sheep.

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Natassja Gale
UK
Natassja andGale
Strategic Designer (Digital Operations)

Bridging future-oriented research, innovation, and design principles and practices, my focus is on optimising our core business through developing and delivering resilient, human-centred solutions. I bring energy, raise questions, push boundaries and break rules. The most vital part of my life is the people within it, as the relationships we hold with one another are everything.

Greg Bartlett
Australia
Greg andBartlett
Senior Consultant

I design, develop and manage solutions for key clients. I am passionate about helping people and businesses be at their best through practical and personal change. I love bringing innovative and challenging ideas to my work. I get my energy from time with my gorgeous family, my exciting work and my personal passion for sport and adventure.

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Yusuke Kobayashi (Baya), Impact International
Japan
Yusuke andKobayashi(Baya)
Assistant Manager, Client Partner

'Continuing to "enjoy" life'
My lifelong mission is to continue positively influencing both myself and those around me, while persistently seeking enjoyment.
Throughout my career, I've had various experiences, from utilizing cutting-edge technology in logistics to engaging in gritty tasks. Through these experiences, I've realized the importance of finding meaning and joy in everything I do. Although sustaining this mindset is not easy, I am committed to continuous learning to become a professional to bring a positive impact to people and organisations.

Hannah Reeves
UK
Hannah andReeves
Account Manager

I am passionate about helping organisations, teams, and people be the best they can be. Not all girls are made of sugar and spice and all things nice. Some girls are made of adventure, fine beer, brains and no fear.

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Hillary Lawless Impact
USA
Hillary andO'Dell
Project Manager

I am a program manager, and I love that every day is different, from working on different tasks involved to make a program run smoothly to talking and meeting clients. I come from a hospitality background, so I love the client-facing aspect of my role here at Impact, as well as making sure every piece of the program is on schedule. Outside of work, I am always doing something like teaching dance, travelling, and going to the beach!

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Phil Holdsworth, Impact
New Zealand
Phil andHoldsworth
Head of Asia

In the last 25+ years I’ve worked with many great organisations and love being able to bring a breadth and depth of experience to my programs. I currently regularly travel across Asia consulting for clients and looking after our great people. I'm described as an Energiser Bunny, I bring energy into everything I do, even if I'm stepping off a 12-hour flight! I recover by spending time with my family and exploring the wilderness in NZ with a fishing rod.

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Ewa Rolley
Poland
Ewa andRolley
GM,

Change is my partner in business and life. “Be better” is my inspiration to continue to grow. I joined Impact 20 years ago and have worked in many different roles as a consultant, general manager, coach and business developer from offices in Europe and Asia. In my current role, I am responsible for supporting businesses in Poland and Central Europe, and I am also co-creating transformation solutions with clients. 

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Warangkana Posinsomwong
Thailand
Warangkana and(Lek) andPosinsomwong
Asia Pacific Finance Director

I'm based in Thailand, a country of beautiful islands, good food and nice people. I have a lot of fun working with people around the world. I have more than two decades of international finance and accounting experience. My real challenge is working with Inland Revenue offices in different countries! I love to explore the world through reading and travel and one day wish to have a little cafe where people can sit and have a coffee or few drinks and craft together.

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Sam Parkin
UK
Samantha andParkin
Credit Controller

I'm part of the UK Accounts Department and I'm responsible for issuing all of Impact's sales invoices both electronically or by post in a multitude of currencies sent to our clients all over the world. I work closely with lots of my colleagues both here in the UK and overseas. Out of work I enjoy spending my time cycling in the beautiful Lake District Countryside, walking and spending time with family and friends.

 

Sabrina Bianchi Impact
Italy
Sabrina andBianchi
Head of marketing and Communication

I joined Impact in early 2022, and it was the best start to the year ever! My commitment is to develop and implement communication and marketing activities to give more and more visibility to the pathways and initiatives we create for our clients. In my spare time, I cheer for Inter and organize dinners and trips with friends and family.

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Mario GianAndrea, Impact Italy
Italy
Mario andGianAndrea
President and Founder

I’ve been many in my working life: an HR Director, an entrepreneur, a leader, a coach, a salesman, a visionary, a confidant, a manager. And a friend. And I am still excited (and sometimes anxious) when I meet a new group of people. I genuinely enjoy it! This is the reason I'll probably work for another decade! The only difference compared to the past: today I can afford to only work on projects and with people that I really like and that gives me the feeling that it will be great fun!

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Fabrizio Passacantilli
Italy
Fabrizio andPassacantilli
Consultant and Facilitator

As an Organisational Psychologist, I love helping people to better live their job and the relationships within the organisation they work. At Impact, I have the possibility to do that, designing and delivering intervention programmes. I find my energy in teamwork, my soul in music, my peace in swimming.

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John Matthews
UK
John andMatthews
Senior Consultant

I bring passion and experience to serve clients in some of the world's most progressive organisations - enabling leaders to perform at their best. I'm told I have an engaging and inquisitive style that connects easily and am particularly effective at getting people to see the wider context. I enjoy adventure and love nothing more than exploring the wilderness with family and friends or tackling an unusual sporting challenge.

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Alissa Joy
UK
Alissa andJoy
Project Manager

Programme Coordinator at Impact. I am based in the Windermere office (UK) and joined the company in 2021. 

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Sue Hunt
Sue andHunt
Board Member

My first school had the motto 'Aim High' and that has always resonated with me. I rise to a challenge, both personally & professionally, enjoying new situations and solving difficult & complex problems. I certainly had plenty of those as International Treasurer of Goldman Sachs and as a Director for the London 2012 Olympics & Paralympics. I joined the Board of Impact to help grow the business globally. It's great to be part of such a diverse global team!

Elena Ceriotti
Italy
Elena andCeriotti
President, Executive Coach

Find a job you love and you will never work a single day in your live! I do everything from managing the business, to inspiring people and helping clients to develop as sustainable business in which the quality of leadership is crucial. People describe me as a passionate and fast moving person, able to quickly connect to the culture and the needs of each organisation and to co-design powerful solutions. I love adventure which is about saying “yes” to life.

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Hisae Hashimoto, Impact International
Japan
Hisae andHashimoto(Sae)
Facilitator

I provide inspiring opportunities for leaders to explore possibilities in expanding sustainable business and organisational development. As a staff support manager I have been leading operations such as talent acquisitions. Supporting others and organisations to expand their full potential is my passion. I enjoy ensuring we have a unique workplace where we can maximise potential and strengths. I love climbing mountains, hot springs and good organic foods.

Verity Bellouere, Impact International
UK
Verity andBellouere
Project Manager

I look after clients from tender, right through to evaluation. Three of my four main clients are global, so it’s about managing time differences too. I am the 'go to' person for many other things as I've worked here since 1991. I'm open, honest and always have an opinion! Questions usually start with “you will know...” I like nothing more that being up a hill in the Lake District or French Alps and camping in Cornwall with family and friends.

Agata Stanik, General Manager, Country Manager
Poland
Agata andStanik
Country Manager

I am passionate about helping organisations become worth working for and making the world a better place, achieving long term sustainability for a safe future. At Impact I can grow and flourish to my full potential and at my own pace. Together with me grow our partners and our relationships, evolving into true friendships. Ecology, whether it comes to the planet, environment or people and relations, is a value of great importance to me.

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Martina Case, Impact
UK
Martina andCase
Business Support

I always enjoyed working for companies who share my values and whose work I can be passionate about. I love that Impact wants to make a difference and has the purpose to help build companies worth working for. I enjoy a good adventure and have a passion for travelling, my latest adventure being swapping London life for the great outdoors of the lovely Lake District!

Fabio Gabbiani
Italy
Fabio andGabbiani and
Senior Consultant and Key Account Leader

With over 26 years as L&D and Internal Communication manager in large multinational companies, I’ve developed deep knowledge in consulting roles, building trusting relationships with all levels of an organization, implementing complex projects. I love my job, the countryside, animals and sports.

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Sarah Golding, Impact International
UK
Sarah andGolding
Head of Account Management

Here at Impact I have the pleasure of managing a portfolio of impressive global programmes and a number of our key clients. I like to simplify the complex, gain clarity where there is ambiguity and drive efficiency and quality through my project teams. I love meeting different people and understanding what makes them tick! I'm full of energy, constantly smiling and always ready for the next adventure.

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AlassaneDiop
Italy
Alassane andDiop
Consultant and Facilitator

I’m a consultant with an international and multicultural background and approach my work with contagious enthusiasm and commitment. My experience working with both large corporations and small startups gave me a deep insight into overcoming business operational hurdles and developing proactive trainings paths to grow and enhance teams. Over the years I’ve gained experience in facilitating and promoting dialogue in B2B partnerships and creating organizational innovation projects.

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Leadership

The leadership playbook: executive summary

Get hands on with our interactive leadership playbook, shaped by 45+ years' experience working with some of the world's biggest organisations.

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Leadership
News

2025 Training Industry Top Training Companies Lists: Leadership Training 

Training Industry, known for its independent and rigorous assessment of the training marketplace, has recognized Impact as a Top 20 Leadership Training Company for the 15th consecutive year.

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Change
Innovation & Creativity
Leadership

C-level leaders on navigating complexity

Discover what it means to lead in today's global business environment through our insightful eBook.

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Emerging Talent
Transformational Leadership

Frontline leadership program for Orica

A 12-week blended program designed to help frontline leaders develop foundational and practical skills to be more effective in current

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Change
Digital & Technology
Leadership

Podcast: Is BANI the new VUCA? with Jamais Cascio

Jamais Cascio created the BANI framework in 2018 and six years later, Impact is the first UK/US based organisation to invite him to speak about it. In this podcast we explore what BANI is and how...

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Change Management
Transformational Leadership

Empowering transformational change through leadership with Charter Manufacturing

Charter Manufacturing’s multi-award-winning programs have produced leaders who are enabled to be agile and lead transformational change.

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Our awards

Year after year, we continue to be acknowledged for the quality and effectiveness of our partnerships with clients and for our own work on building Impact as an organisation worth working for.

2025 Training Industry Top 20 Leadership Training Company
Top 20 Leadership Training Company 2025

Impact is a 2025 Top 20 Leadership Training Company. Training Industry independently assess the training marketplace for top providers. Their Top Leadership Training List, based on capabilities and expertise, includes Impact for the 15th consecutive year. 

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AITD 2025 award finalist
AITD Excellence Awards 2025

Orica's Frontline Leadership programme has been shortlisted in the Best Leadership Development category of the AITD Excellence Awards 2025 (Australian Institute of Training and Development).

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