Adessy focuses on enabling organisations to create a sustainable future and helping individuals in pursuit of making the world better.
We work with clients from around the world who push the limits of what is possible to achieve sustainable and tangible benefit for people, planet and profit.
Adessy is motivated by social impact, adept at strategy, and skilled at facilitating change. We harness sustainability, innovation, consciousness and purpose.
We challenge, inspire and connect you with the knowledge, skills and competencies to create a meaningful and lasting legacy of positive change.
How We Help

We believe a better world is possible and we want to help make it happen by championing a new era of leadership to effect positive change and enabling a sustainable future.

With our highly personal approach, we work with organisations and individuals to help them be a catalytic force for good. Adessy provides tailored Catalyst packages, Consulting and Advisory and Capacity Building.

With an ever-present focus firmly on our client, Adessy engages and works with clients to (re) calibrate activities, leverage benefits and learning to fuel their vision for the future.

Incorporating social, environmental, economic and human ethical principles, we constantly evolve, respond to market changes and strive for great outcomes.

Leadership is emerging as the critical differentiator of successful organisations and empowered individuals, who are taking appropriate and assertive steps to be better equipped for the future.

Our vision is to enable an influential eco-system of connections, collaborations and partners to build a learning community that shares, inspires, celebrates and supports each other.

We help organisations succeed better, and benefit people, planet and profit too.
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Our theory of change embraces head and heart. Every successful philanthropic effort requires: Vision, Values, Logical Thinking, Planning, Connections and Sustainable Action.
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What We Do

We create compelling propositions for organisations or individuals to help achieve extraordinary things, enable a sustainable future and help change the world for the better.

Adessy’s approach is underpinned by continuous improvement, transformational change and collaboration with your people.

Our multidisciplinary approach brings together a diverse range of skills and experience to deliver. Each client or project is unique and draws on a different mix of experts to deliver the right outcomes.

We are fiercely independent, we believe in transparency, we are free from bias and commercial alliances, and we have the freedom to focus entirely on our clients and their success.

Catalyst Package
Our Catalyst package is a personalised support programme that helps organisations or individuals define, focus, or develop their change ambitions.
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Consultancy & Advisory
Our distinctive approach to consulting and advisory is focused on building outstanding outcomes.
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Capacity Building
We facilitate intimate and engaging experiences, which are a kind of an inspiration factory and encouragement network.
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Adessy’s Definitions:

Investment = capital, energy, time, knowledge, networks etc.

Social return = a multitude of (indirect) non-financial gains that have social and environmental value. To give a flavour of social return, measures can relate to impact on recipients; employee engagement; improved opportunities and quality of life; new knowledge, thinking and ways of doing; open dialogue; new partnerships or engagement... and so much more.

Innovation return = a multitude of (indirect) non-financial gains that can lead to transformation - new products, services, processes or new markets; enhancing opportunities - such as changing composition of products, services or processes; or on an individual level - rethinking the ways you do things on a daily b asis, creative thinking, being curious and experimenting, realising ambitions... etc.

Our Experience
Who We Are

At the heart of everything we do, is our desire to do the right thing - for our clients, people and community. Acting with integrity is vitally important to us.

Meet The Team

Leesa Muirhead Founder
Leesa is a collaborator, visionary, gentle disruptor and entrepreneur who brings almost 20 years experience to catalysing positive change.
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Rebecca Logan Associate
Becca has 20 years' experience of working together with business, non-profits and individuals to create sustainable change across a number of issues and sectors.
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Advisory Board

Olive Boles Chief Executive, Leuka
Leuka is a charity that raises funds to support life saving research into the causes and treatment of leukaemia and other blood disorders.
Amanda Bowman
Amanda specialises in helping to change the way business does business, in particular in how to change or develop business models and processes that have a benefit on society and international development.
Andrew Heath MD Phd
Andrew is a strategically focused senior business leader with a track record of outstanding results in the healthcare and biopharmaceutical industry.
Michael Ison Partner, St. James’s Place Wealth Management
Michael practised originally as a private client lawyer at City law firm, Berwin Leighton Paisner, handling tax and trust issues.

It is the policy of Adessy Associates not to discriminate against any applicant on the basis of age, race, ethnicity, religion, gender or disability. All Adessy personnel – including, but not limited to, those who are responsible for hiring and promoting employees or Associates for the development and implementation of programmes or activities – are charged to support this policy. We actively value diversity and wouldn’t be the organisation we are without it.


Pioneers for Change Huffington Post blog: perspectives of change makers from around the world

Article: A new era of social leadership

Article: Pathway to Philanthropic Success

Collaboration: Aspen Business and Society Prize the Future

Constructive Capitalism for Goodness Sake Survey Report Autumn 2012

Click here to download our Adessy leaflet