World class climate change adaptation and resilience services


Acclimatise is a Willis Towers Watson Company and is part of its Climate and Resilience Hub.

We are team of passionate people working to make a difference out of a deep sense of responsibility to help manage the climate crisis.

Our vision

A world that is ready for a new climate reality.

Our mission

Acclimatise’s mission is to make the world more resilient to climate change.

We do this by making climate change information useful for our clients, helping them to make the very best decisions in the face of uncertainty. Working with corporates, financial institutions and governments around the world, Acclimatise is committed to achieving the greatest impact in driving action on climate change adaptation.

Acclimatise is focussed on delivering quality and value for its clients. We strive constantly to be the best at what we do.

Our values

Our values underpin our work, they drive everything we do and ensure that we never lose sight of the things that matter. These ten value statements shape the way we think and behave:

  1. We have respect for people, cultures, beliefs, and the planet. Through respect we learn, understand and grow.
  2. We work with integrity and fairness.
  3. We are committed to and passionate about driving action on climate resilience.
  4. We take pride in providing high-quality work and advice.
  5. We are curious and perceptive and strive to break new ground.
  6. We are open to new ideas and willing to be changed by them.
  7. We are entrepreneurial and innovative. We never stand still.
  8. We value diversity which helps look at problems in new ways.
  9. We are forward-looking and invest in the long-term careers of our staff.
  10. We are understanding of personal situations and are flexible in our working arrangements.

Our history

Acclimatise Group Ltd. was formed in November 2004 by John Firth and Dr Richenda Connell. At that time, and despite the science of climate change being well advanced, corporates and governments were taking relatively little action to prepare for the inevitable consequences of climate change. John had decades of experience working in the UK water sector, and was pioneering the sectors’ work recognising climate risk and building resilience. At the same time, Richenda was leading the UK Climate Impacts Programme, developing best-practice frameworks for adapting to climate change and its impacts. Recognising the need for a step-change in the way the world was responding to the climate challenge, John and Richenda formed Acclimatise. Their vision was a world that is ready for a new climate reality – this vision remains at the heart of Acclimatise’s work to this day.

Since then, Acclimatise has developed its services and operates two distinct divisions: Advisory and Analytics. Advisory is the home of Acclimatise’s technical climate risk and adaptation expertise. The company provides world-leading advisory services, helping corporates, investors and governments integrate climate change risk into their business processes and build their resilience. Acclimatise has completed over four hundred projects; this unrivalled experience underpins all of the company’s products and services and provides it with a deep understanding of the changing risk landscape for its clients.

Willis Towers Watson’s Climate and Resilience Hub

Since November 2020 Acclimatise is wholly owned by leading global advisory, broking and solutions company Willis Towers Watson. The Acclimatise team is now part of Willis Towers Watson’s Climate and Resilience Hub. The combination creates a market-leading centre of climate adaptation expertise with over fifty technical staff, significantly expanding the capacity and capabilities of both teams in climate risk assessment, resilience planning and analytics. The Climate Resilience Hub is supported by the Willis Research Network, a network of more than sixty organizations in science, academia, think tanks and the private sector working to improve the understanding and quantification of risk, with the aim to improve the resilience of our clients and society as a whole.

About Willis Towers Watson

Willis Towers Watson (NASDAQ: WLTW) helps clients around the world turn risk into a path for growth. With roots dating to 1828, Willis Towers Watson has 40,000 employees serving more than 140 countries. We design and deliver solutions that manage risk, optimise benefits, cultivate talent, and expand the power of capital to protect and strengthen institutions and individuals. Our unique perspective allows us to see the critical intersections between talent, assets and ideas — the dynamic formula that drives business performance. Together, we unlock potential.

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