Strategic Sustainability Expertise
Sustainability Capability, Built Around Outcomes
Six core capabilities, one delivery system
Every organisation’s sustainability journey is different. Progress comes from bringing together the right expertise at the right time.
Cala Sustain combines six complementary service areas into one flexible delivery model.
- Strategy & Transformation
- Environmental Management & Assurance
- Climate, Carbon & Energy
- Sustainable Supply Chains & Products
- Data, Digital & AI
- People, Culture & Change.
Everything we offer can be delivered as a standalone service or integrated into a wider programme. The result is efficient, effective support that connects sustainability goals with measurable business outcomes.
1. Strategy & Transformation
Define the destination > make the case for change > connect sustainability to commercial drivers
We help organisations connect sustainability with commercial priorities, organisational goals and long-term value creation. Through strategic insight, leadership support and programme delivery, we turn ambition into action.
Areas of Expertise:
- Sustainability and ESG strategy
- Maturity assessments and roadmap development
- Business and operating model transformation
- Executive advisory and facilitation
- Commercial strategy, value creation and customer excellence
- Programme leadership and knowledge transfer
Your organisation gains a clear, commercially aligned sustainability strategy that prioritises investment, accelerates delivery and creates measurable long-term value.
2. Environmental Management & Assurance
Create control > Build confidence >strengthen resilience
We provide the systems, governance and assurance needed to support effective environmental performance, regulatory compliance and operational control.
Areas of Expertise:
- Environmental compliance and governance
- Risk management frameworks
- ISO 9001, ISO 14001, ISO 45001 and ISO 50001 support
- Integrated management systems
- Independent audits and assurance
- Environmental due diligence
- Technical authority support
- Defence environmental management, USEMS and POEMS
- Through-life environmental assessment
- Emergency preparedness and operational controls
- Audit readiness programmes
Your organisation strengthens governance, reduces risk and builds confidence through robust systems, effective controls and assured environmental performance.
3. Climate, Carbon & Energy
Turn evidence into action > enable informed decision-making
We help organisations understand their climate impacts, identify priorities and deliver programmes that support long-term climate resilience and performance.
Areas of Expertise:
- Scope 1, 2 and 3 and product carbon accounting
- Carbon reduction plans
- Net zero pathways
- Decarbonisation programmes
- Energy management and ESOS compliance and delivery
- Climate risk assessments
- Resilience and adaptation planning
- Performance frameworks, targets and investment prioritisation
Your organisation makes informed decisions that improve energy performance, reduce emissions and strengthen resilience to climate-related risks and opportunities.
4. Sustainable Supply Chains & Products
Reduce risk > Innovate > Create Value
We support organisations in strengthening supply chains, improving transparency and embedding sustainability throughout procurement and product development.
Areas of Expertise:
- Sustainable procurement and responsible sourcing strategies
- Supplier assessment and engagement
- Supplier capability development
- Circular economy initiatives
- Resource efficiency programmes
- Product sustainability
- Life cycle assessment (LCA)
- Social value integration and Supply chain transparency
You’ll enhance your organisations supply chain performance, increase transparency and unlock value through more sustainable products, sourcing and procurement practices.
5. Data, Digital & AI
Actionable Insights > Accelerate decisions > Power Intelligent workflows
We transform data into actionable insight, enabling faster decisions, better reporting and more effective sustainability performance management.
Areas of Expertise:
- Data strategy and architecture
- Data engineering and analytics
- Decision-support, dashboards and performance reporting
- AI-enabled sustainability workflows
- Digital transformation
- Spatial analysis, modelling and data science
- Full-stack development
- Systems integration
Your organisation will gain greater visibility of performance through connected data, intelligent insights and digital solutions that support faster, more effective decision-making.
6. People, Culture & Change
Turn intent into leadership > embedded behaviours > lasting organisational capability
Successful transformation happens when people are aligned around a shared purpose and equipped to deliver it. We help organisations build engagement, leadership commitment and sustainable ways of working.
Areas of Expertise:
- A compelling case for change, clear vision and shared narrative
- Leadership alignment, senior stakeholder engagement and facilitation
- Culture and behaviour diagnosis, design and intervention
- Organisational design and implementation of new ways of working
- Change communications, programme support and momentum management
- Capability development and knowledge transfer
- Embedding self-sufficiency
Your organisation will build the capability and engagement needed to embed sustainability and deliver lasting value.
Connected Capability And Measurable Outcomes.
By aligning strategy, governance, supply chains, data and people, your organisation can improve your sustainability outomes, enhance performance and unlock lasting value.
Why Cala Sustain?
Cala Sustain brings together strategy, technical expertise, data capability and people-centred transformation in a single delivery model. By combining these disciplines around a defined organisational outcome, we help your organisation create measurable progress, stronger performance and lasting capability.
Second to None
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.
Always Add Value
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.
We couldn’t have done it without you
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!
Great people to do business with
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.
In depth Knowledge
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.
Great Partner to work with
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.”
Would recommend them
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.
Second to None
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.
Always Add Value
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.
We couldn’t have done it without you
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!
Great people to do business with
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.
In depth Knowledge
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.
Great Partner to work with
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.”
Would recommend them
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.