Real Results from Tunley's Retainer Partners

FEATURED SUCCESS STORIES

Explore our retainer case studies to learn more about each project. Scroll down to discover the featured projects and their details.

FEATURED SUCCESS STORIES

Explore our retainer case studies to learn more about each project. Scroll down to discover the featured projects and their details.

Optima’s journey toward net zero began five or six years ago, but they faced uncertainty about the true environmental impact of their business and products. Aluminium’s high carbon footprint created pressure, but sustainable alternatives weren’t clear.

Tunley Environmental helped measure company-wide and product emissions, improve product performance, and educate the supply chain, and even supporting one supplier to achieve net zero. This evidence-based approach allowed Optima to make informed, credible sustainability decisions and lead their sector in low-carbon solutions.

Tunley Environmental supported Optima with comprehensive carbon measurement and lifecycle assessments across their organisation and products. This data revealed that while virgin aluminium is carbon intensive, high-recycled-content aluminium offers a significantly lower-impact alternative.

Working together, Optima secured access to 75% post-consumer recycled aluminium, dramatically reducing embodied carbon while retaining the performance and circularity benefits of aluminium.

Through our ongoing partnership, Optima has:

Embedded sustainability across the business, with board-level oversight
Reduced company and product emissions
Published 30+ Environmental Product Declarations
Invested in renewable energy, heat recovery, and cleaner transport
Launched take-back and reuse schemes to support circularity
Expanded focus beyond carbon to include biodiversity, water, and CSRD readiness

Optima is now recognised as a sustainability leader in their sector, outperforming key competitors based on publicly available environmental data. Their approach is grounded in evidence, integrity, and continuous improvement.

Business Carbon Assessment

Life Cycle Assessments

Environmental Product Declarations

Supply Chain Biodiversity Footprint Assessment

Green Marketing Support

Training Courses

Building Structure from Scratch

PB DESIGN: FROM ENVIRONMENTAL SUPPORT TO STRUCTURE SUSTAINABILITY

PB Design is a UK‑based, employee‑owned engineering and manufacturing company specialising in industrial DC standby power systems.

For PB Design, they moved from uncertainty to clarity, using their retainer to build consistency and confidence. See how Tunley worked with PB Design on their retainer in the case study video.

When PB Design first approached Tunley Environmental in 2022, they had no environmental expertise or systems in place on-site. With increasing pressure from customers and suppliers to demonstrate sustainability, they needed a way to measure and report their carbon emissions, set achievable goals, and integrate environmental responsibility into their business strategy.

Tunley Environmental partnered with PB Design to provide a structured sustainability framework. This included conducting both business carbon assessments and embodied carbon assessments, as well as a 12-month retainer for ongoing carbon reporting. We guided PB Design through the process of measuring emissions, interpreting results, and setting realistic sustainability targets, ensuring they had continuous support and expert advice throughout the journey.

Through our ongoing partnership, PB Design has:

Gained a clear understanding of their carbon footprint and a roadmap for improving their environmental performance
Create accurate ESG and carbon reports while building credibility with customers and suppliers
Make informed decisions about sustainability initiatives.

Our support gave them confidence and clarity where they previously had none.

PB Design now receives annual ESG and business carbon assessment reports that are timely, accurate, and within budget. They have clear, actionable sustainability goals and feel supported and prioritised in their environmental journey. The collaboration has enabled them to strengthen relationships with stakeholders, enhance their market positioning, and confidently communicate their sustainability achievements.

Business Carbon Assessment

Embodied Carbon Assessment

Personalised Scientific Guidance

PECO PALLET: SCIENCE-LED PARTNERSHIP, BUILT FOR PROGRESS

PECO Pallet is a North American leader in reusable pallet solutions, helping businesses move products efficiently while reducing environmental impact.

For PECO Pallet, the retainer keeps complex supply-chain goals on track, with science-based support, year after year. See how Tunley worked with PECO Pallet on their retainer in the case study video.

PECO Pallet partnered with Tunley Environmental in 2024 to establish credible, data-driven sustainability practices. They needed robust Greenhouse Gas (GHG) measurement, validated environmental assessments, and practical guidance to ensure their ESG initiatives were both effective and actionable.

Tunley Environmental provided a comprehensive, ongoing partnership to embed sustainability into PECO’s operations. Through a 2026 retainer, Tunley continues to provide advisory support for sustainability reporting and customer engagement, ensuring that PECO’s initiatives remain measurable, credible, and integrated into business decision-making.

Through our ongoing partnership, PECO Pallet has:

Achieved EcoVadis Bronze Rating (Top 35%)
Inbound Logistics Green Supply Chain Partner 2025
SME Winner 2025 – Environmental Sustainability Award – CITT
Business Carbon Verified (2024) and Product Carbon Verified (2025) by Tunley Environmental
Sustainability Accounting Standards Board (SASB) Alignment
Ensured that PECO Pallet’s initiatives are practical and impactful

PECO has embedded sustainability into its operations with measurable and repeatable processes, achieving both internal and external confidence in its ESG performance. The partnership has made sustainability practical and actionable for the business.

Greenhouse Gas (GHG) Inventory

Life Cycle Assessment (LCA)

Training Courses

Strategic Support for internal sustainability processes

Ongoing Advisory Support for sustainability reporting and customer engagement.

Flexibility in Action

INSPIRED ENTERTAINMENT: FLEXIBLE, TAILORED SUSTAINABILITY SUPPORT

Inspired Entertainment is a global company that provides digital gaming and betting solutions, including online and mobile gaming, virtual sports, and interactive content.

For Inspired Entertainment, a retainer brings adaptability, ongoing help that fits around their fast-moving world. See how Tunley worked with Inspired Entertainment on their retainer in the case study video.

Inspired Entertainment needed expert environmental guidance to manage and understand their sustainability efforts. They wanted the ability to work across a variety of projects while ensuring that their environmental initiatives, such as carbon footprinting and life cycle assessments, were accurate and meaningful. Flexibility and clarity were key priorities for the business.

Tunley Environmental partnered with Inspired Entertainment in 2023 to provide tailored support. Over the years, this included ongoing support in 2024, a retainer in 2025, Business Carbon Assessments, and Life Cycle Assessments. Tunley’s team delivered a bespoke approach, explaining complex sustainability concepts in a clear and approachable way, while structuring services to allow Inspired Entertainment to move seamlessly between projects.

The partnership enabled Inspired Entertainment to confidently switch between different sustainability projects without losing momentum. Tunley’s guidance helped the team better understand and implement environmental strategies, creating a sustainability approach that fit perfectly with the company’s business model.

Thanks to the flexible retainer, Inspired Entertainment was able to manage projects in a way that suited their business needs. The team gained clarity and confidence in tackling complex sustainability initiatives, and the collaboration with Tunley aligned perfectly with their goals, supporting ongoing growth in environmental responsibility.

Business Carbon Assessment (BCA)

Life Cycle Assessment (LCA)