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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.

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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Chiara Fregonese
Italy
Chiara andFregonese
Senior Consultant and Head of Solutions

As a consultant, organisational psychologist, account manager and researcher…I endeavour to encompass all the different aspects of life in the organisation! To me the organization is a magic happening between individuals, groups and their work contexts. I deal with the entire consulting process: from the proposal development, to the client management, intervention delivery and evaluation process. I love the countryside, baking cakes & capoeira!

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Jessica Cucco
Italy
Jessica andCucco
Senior Consultant and Executive coach

With over 25 year experience working as a Consultant and Executive Coach specialized in People Management and in topics related to organizational development, I had the chance to come across Impact after  an International experience in UAE and South Korea. Living abroad I got familar with different cultures and change. Coaching people along their transformational journey, supporting organizations throughout change is what really matters to me, my job!

Chantana Prapasri, Impact
Thailand
Chantana andPrapasri and"FG"
Finance and Admin

Since joining Impact Thailand in 2006, I have been more energetic and enthusiastic to come to work. It is the best workplace that I can be myself. Everyday at work is great for me.

Arianna Bianchi
Italy
Arianna andBianchi
Consultant and Facilitator

As a consultant, I hope to be a catalyst for change, helping others to discover what their real needs are. Empathy, curiosity, creativity, organisation and strong sense of duty are the things that most characterise me. I love the adventure and the discovery of travelling, organising outdoor trips with friends in close contact with nature… But also sharing a gin lemon or a barbecue at home is not so bad!

Akira Matsumoto (Mikey), Impact International
Japan
Akira andMatsumoto(Mikey)
Assistant Manager, Facilitator

With nearly 18 years in the retail industry, I held roles such as sales, store manager, trainer, and area manager. These experiences taught me that when people grow, organizations grow. Supporting others made me reflect on my own growth and whether I still had something to offer. To challenge myself, I moved into a new industry. Now, I work to create training experiences that resonate emotionally and leave a lasting impression—while continuing to grow with my clients. 

Aidan Keough
Australia
Aidan andKeough
Senior Consultant

I help people gain insights into themselves and their team so they can improve as individuals and work more effectively together. As a facilitator I create the right learning environment and work alongside participants providing a balance of challenge and support. I bring over 20 years of senior leadership experience. I love learning, the outdoors and am fascinated with horses. I live on a small farm with my wife and two teenage children, and a herd of horses.

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Dileepan Dhanasekaran
Singapore
Dileepan andDhanasekaran
Digital Business Support Analyst

Joining Impact was one of the best decisions I have ever made. I am responsible for digital enablement and transformation across our global business, data protection programmes, amongst others. I really love the culture at Impact as it is very people-centric, focus driven and a dynamic workspace. Outside work, you will find me playing badminton, swimming, taking long drives and hanging out with friends.

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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.

Yui Tanaka(Yucho), Impact International
Japan
Yui andTanaka(Yucho)
Coordinator

My food and beverage career began with a bartending job as a student. Working in large restaurants taught me that guest service depends on recruitment and training. After roles as restaurant manager, supervisor, and recruitment and training lead, I focused on employer branding and training programs. To deepen my expertise, I joined Impact Japan, a global leader in experiential learning. I am now developing as an organizational development partner in CSD. I enjoy fishing, hiking, and rugby.

Marta Lamberti
Italy
Marta andLamberti
Senior Consultant and Facilitator

Hi! I am an occupational psychologist, coach and trainer! I have been working for over 20 years to help companies develop and enhance their greatest capital, their people! I met Impact many and many years ago, and I am still proudly part of it! In my spare time I am a theatre actress, a traveller, but above all... a mum!

Sam Rostas, Impact International
UK
Samantha andRostas
Global Lead

After 10 years leading the UK, I am now in a global role focused on two areas: one leading a people project, the other focused on marketing. I grew up through Impact as a marketer and love the buzz of building business through brand and storytelling. My other passion is the people and culture here, so this is the ideal combination for me. When I’m not working, I love spending time with my family, enjoying the outdoors and practicing yoga.

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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.

Sally Fleming, Impact International
UK
Sally andFleming
Senior Consultant, UK

My focus is on developing responsible leadership. I bring a warm combination of broad industry experience, academic rigour, Yorkshire humour and humility. My motivation and purpose is to help us mutually learn and create a more sustainable, compassionate and just world.  Fortunately, my spirited playful side, wilderness adventures and inclination toward anything shallow on a Friday night ensures people still invite me to parties despite all of that.

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Magdalena Cackowska, Impact International
Poland
Magdalena andCackowska
Financial Manager

My job is managing financial issues: reports, financial simulations, payments, also preparing contracts for clients, associates, employees and much much more… from coordinating travel arrangements to organising internal meetings and workshops. I love working with Impact people – I’ve worked here since 2003 and have no plans to move! I’m crazy about my small bit of land near the river and forests where I travel almost every weekend with my family and friends.

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Anna Ziółkowska
Poland
Anna andZiółkowska
Senior Consultant

I am happy to be responsible for creating and implementing new solutions as well as taking care of our clients and delivering adventurous programs. I see my purpose as working with people to help them be more aware of their power and inner wisdom and therefore to make our organisations and communities stronger. I get my energy from time with my gorgeous family, biking, reading in a hammock, listening and dancing to the music.

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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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Agnieszka Nowak
Poland
Agnieszka andNowak
Account Manager

After years of being a client and fun of Impact, I became part of this amazing community. My extensive professional experience in HR, across various roles and industries, proves invaluable in conversations with our clients. At Impact, as an Account Manager, I embrace the essence of lifelong learning, discovering something new every day 😊 Personally, I have a passion for traveling, reading, and forest walks.

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Sarah Osteen
USA
Sarah andOsteen
Senior Consultant

I have spent my career exploring, researching, teaching, coaching and practising leadership skills. I love working with individuals and groups to tackle hurdles and develop strategic initiatives. When I am not designing programs, I like to spend time with my son and my husband building forts out of driftwood or laughing with friends in the beautiful pacific northwest.

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Jaya Machet
Singapore
Jaya andMachet
Senior Consultant

My coaching & facilitation expertise builds on a strong foundation of 20+ years in senior management positions including global and regional roles. I guide leaders to their peak potential and help enhance their professional and personal impact. I grew up in India and then studied and worked in Switzerland for 23 years before moving to Singapore. This has helped me successfully bridge Eastern and Western thinking, with an in-depth understanding of both cultures. I am an avid reader and love to spend time in nature and travel. 

Tim Lofthouse Impact
UK
Tim and(Lofty) andLofthouse
Support

I support delivery of high quality, safe and challenging programmes and keep the operations infrastructure in a safe and workable condition. I have been lucky to have worked in some amazing places around the world with some amazing colleagues and participants. Working from Base still takes some beating though! When not working I enjoy having adventures with my family, exploring the Lakes and keeping fit by running, climbing and riding my Cyclocross bike.

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Rachael Garner, Impact International
UK
Rachael andGarner
Global Account Director

I consult with our customers to understand their business aspirations and challenges before recommending a learning solution that is going to exceed their needs. I maintain close relationships to ensure they receive the best possible service. I work across all market sectors and levels; however, I'm particularly passionate about graduate development. Out of work, you’ll find me up a mountain attached to either a rope or a pair of skis.

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Claire Hewick, Impact
UK
Claire andHewick
Support

I was an associate for Impact for 21 years before becoming part of the full-time team. I love the sense of fun, friendship, camaraderie and the way Impact works. Oh, by the way I’m on the Technical Support Team – ropes and boats, programme design and logistics and lots of other things too. I love my job, get loads of out of it, meet lots of amazing people and learn new things all the time – how lucky am I?

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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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.

2026 Training Industry Top 20 Leadership Training Company
2026 Training Industry Top 20 Leadership Training Company

Impact is a 2026 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 16th consecutive year. 

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Chief Learning Officer gold award 2025
Gold Excellence in Partnership Award from Chief Learning Officer 2025

Impact won the gold award at the Chief Learning Officer 2025 Learning in Practice Awards for Excellence in Partnership. This recognises our support of Bristol Myers Squibb in implementing a learning and development programme.

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