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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.

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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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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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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Romina Henle
Italy
Romina andHenle
Senior Consultant and Facilitator

Since 2018 I collaborate with Impact as an associate. I love facilitating its varied experiential learning programs, online & in person. I am mainly involved in the delivery for international groups and teams. It is enriching to collaborate with Impact’s colleagues, getting to know different industries, working cultures, professional profiles and much more. I enjoy being in nature, experimenting new things in life and experiencing the different customs and traditions of our world. 

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Lisa Priore Impact
USA
Lisa andFelloni
Finance Administrator

I am a highly experienced Accounting and Financial Management professional with expertise in problem solving, business communications, project management and customer relationships. I’m an enthusiastic leader, successful in liaising across all levels, handling confidential information and managing multiple priorities. I enjoy attending live events; cheering on my favourite sporting teams, watching my friend’s rock band, and supporting my daughter’s dance team.

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Carrie Fritz Impact International
USA
Carrie andFritz
Head of Program Management

I'm passionate about helping those around me grow and develop. I encourage my team to bring themselves into everything they do.  Our diverse backgrounds, experiences and perspectives help us partner efficiently and effectively with colleagues and clients.  As a traveller at heart, I’ve visited 31 of the 50 US states, 14 countries and 8 Caribbean islands. I love experiencing new cultures, enjoying the great outdoors and trying local cuisine.

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Vesna Lorenc, Senior Consultant
Poland
Vesna andLorenc
Senior Consultant

I have been supporting people in communication for 20 years. Initially as a consultant and currently as a trainer, coach, and mediator. I am passionate about people and the complexity of human nature, and like to help tame this complexity for a specific purpose. Socially involved, I'm also a mother of three. Between all this, I find balance in meditation, yoga and nature.

Anthony Barrett
UK
Anthony andBarrett
Senior Consultant

I am an experiential learning consultant & coach with a passion for adventure, the wild places and sustainability. I design & deliver learning experiences that help people & organisations strengthen the bridge between the business need for results and the human need for connection. I help people explore their “awareness of self” and how they can better engage with the people, systems and organisations that surround them.

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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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Adele Tattersall, Impact International
UK
Adele andTattersall
Project Coordinator

I support the set up and administration related to the end-to-end implementation of client solutions in the UK and worldwide. I am an organised and passionate team player and I enjoy working as part of the various Client Service Teams who manage our clients. Not originally from the Lake District, I feel very lucky to now live and work in such a beautiful place in the UK. I love spending time with my friends and family and keeping fit.

Dave Hardegger, Impact
New Zealand
Dave andHardegger
General Manager, New Zealand
Asia Lead - Solutions & Practice

I love what I do! Each day is so different and brings challenges, interactions, and rewards. In my different roles I get to lead, mentor, coach, create solutions, and deliver life-changing experiences. I’m lucky to be surrounded by amazing colleagues - whom I get to call friends. I relax by spending time in nature – usually with my loving family but with the occasional solo adventure as well!

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Yutaka Sugimoto, Impact
Japan
Yutaka andSugimoto(Yutaka)
Chief Glocal Officer

I was inspired by experiential learning on a leadership programme in 1992 and have worked for Impact ever since. Experiential learning and reflection alongside theory and skills input is a platform for real behaviour change for leaders. My passion is building an organisation worth working for and supporting our clients by developing people. I play football and enjoy discussing the match with friends. Drinking beer maybe more important than playing football.

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Liz Wilson, Impact International
UK
Liz andWilson
Senior Consultant

Senior consultant, currently leading on digital learning production.

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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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Matteo Villa
Italy
Matteo andVilla
Senior Consultant and Facilitator

I joined Impact in 2023 as a senior Consultant, I’ve worked as training and development manager for a major pharmaceutical multinational and at the Business School of the Politecnico di Milano.

Passionate about learning and innovation, I consider it the 'mission' of consulting to transform companies into people centric, innovative and sustainable workplaces.

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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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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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Marjolein Smith
UK
Marjolein andSmith
Graphic Designer

Born in the Netherlands, I aim for simplicity, clarity and efficiency in my designs and processes. I appreciate Dutch, German and Swiss designs for their geometric boldness and witty solutions as well as the minimalism and sense of calm in modern Japanese design. To soothe my creative brain, I put on my running shoes and head for the beautiful hills that surround me to rediscover my peace and tranquillity.

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tonka watson
New Zealand
Tonka andWatson
Senior Consultant

As a former client, I jumped at the chance to work with Impact in 2002 and pursue my passion for inspiring others to realise their potential. I’m an avid reader and love to incorporate my learning into the leadership development programmes that I deliver; recent topics of interest include applied neuroscience & gender dynamics. Dogs feature widely in my life outside of work.

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!

Sydney Johnson
USA
Sydney andJohnson
Program Manager

I am a Program Manager located in the heart of Texas. My favorite part of my role is interacting with so many different people daily while building and carrying out a variety of client-specific programs. Every day, I learn something new, and it excites me to continue growing in my position. When I am not working, you can find me dancing, rewatching Friday Night Lights, traveling, and spending time with my friends, family, and dogs! 

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. 

Glenda Chan, Singapore
Singapore
Glenda andChan
Account and Administrator

I joined Impact in 2014. My current role in finance allows me to connect with and support many colleagues across the region. My work has been enjoyable and worthwhile as I am able to contribute locally & regionally. I find Impact is a good place to work as there is a flexibility and work life balance. Working with a diverse team is fascinating. It is a place where you can be yourself and unique.

Mark Quest, Impact International
UK
Mark andQuest
Consultant

I’ve worked in learning and development since 2000 across a broad range of sectors. I always enjoy the challenge of identifying participants needs and matching the environment, task and conversation to help create meaningful and long lasting learning. Outside of work, you'll find me exploring the outdoors with my family, be that on bikes, in canoes, rock climbing or even exploring underground; we love the challenges that adventure brings to our lives.

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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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