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We have collaborated successfully with the Cala Sustain team on a number of occasions. We have always found them to be knowledgeable, reliable, enthusiastic and very experienced. 

In Defence, their understanding of environmental and sustainability policy and standards is second to none. 

The Cala Sustain team has been our trusted support service for all things “responsible business”. They are able to quickly understand and meet our challenges, understand our business and they always add unexpected value. 

The Cala Sustain team is trustworthy, reliable and knowledgeable. I can’t recommend them highly enough. 

I just wanted to thank you for all the support you gave us with the renewal of our Royal Warrant.

We all breathed a big sigh of relief when we found out that we had been successful, and we couldn’t have done it without you!

Mark’s knowledge and understanding of corporate sustainability issues is extensive. His ability to provide practical solutions to difficult problems through the application of analytical and lateral thinking makes him a great person to do business with. 

Mark has substantial knowledge and experience of environmental and sustainability management issues, an in-depth knowledge of the Ministry of Defence’s processes and procedures, and a sound knowledge of the wider defence industry. 

Cala Sustain have been a great partner to work with on Sustainable Procurement projects, including for the NHS, Defra and under a variety of Frameworks. They demonstrated a wealth of knowledge, experience, tenacity and a clear understanding and practical application of the client’s needs.”

We’ve worked with the team at Cala Sustain over the last few years. We’ve valued their expertise, plus their highly professional and ethical approach and would recommend them to any organisation seeking to develop a company-wide sustainability strategy.