Case study
VoucherCodes: Empowering Confident, Informed Shopping Choices
VoucherCodes, the UK’s most trusted savings site, partnered with Earthmark to help consumers make more informed decisions by surfacing clear, independent sustainability insights. Since launch, the collaboration has driven a 186% increase in visits to sustainability-focused pages, boosted conversions, and attracted new brand partnerships — demonstrating the commercial value of transparency and credible environmental data.
Helping millions shop smarter — powered by transparency
Since launching in 2008, VoucherCodes has been on a mission to make life more affordable for UK shoppers — saving over £50 million in 2025 alone across fashion, food, travel and homeware. In April 2025, VoucherCodes partnered with Earthmark to introduce independent, benchmarked sustainability data across store pages. This initiative enables customers to understand the environmental performance of brands at a glance, while supporting merchants in communicating their progress with integrity and consistency.
↗️ +186% increase in page visits
↗️ +80% increase in visits and +30% average order value uplift for a featured brand
↗️ Expansion from 60 merchants at launch to 200+ merchants in-life
↗️ Inbound partnership growth with brands committed to improving environmental performance
Transparency that builds trust, drives engagement, and strengthens brand partnerships.
Integrating Earthmark’s independent, third-party data into VoucherCodes’ brand experience made credible sustainability information visible at the point of choice. This approach improved clarity for shoppers, helping them make confident, values-aligned decisions. It also positioned VoucherCodes as a partner of choice for brands seeking to enhance performance and credibility. The visibility of benchmarked data has not only deepened trust with consumers but also driven measurable business outcomes, from higher engagement to increased conversion.
“Tools like Earthmark create credibility through independence — third-party benchmarking ensures sustainability information is objective, consistent, and reliable across all brands.”— Moji Oshisanya, Chief Commercial Officer, VoucherCodes
Bringing independent environmental insights to the point of purchase
VoucherCodes’ store pages serve as the first impression for thousands of retailers. By incorporating aggregated Earthmark data, sustainability insights now feature seamlessly within the shopping experience — designed to inform rather than overwhelm, complementing existing content and helping shoppers navigate choices with clarity.
🔗 Integration of Earthmark’s aggregated, third-party data on store pages.
⭐️ Intuitive design that balances clarity with simplicity.
🛍️ Consistent application of benchmarked sustainability metrics across retailers.
👌 Increased user confidence through independent, comparable insights.
🚀 Scalable framework to enhance transparency across expanding merchant categories.
Why credible sustainability data matters
Consumers increasingly expect retailers to provide clear and substantiated information about environmental impact. VoucherCodes’ partnership with Earthmark meets this expectation by turning credible, third-party data into a practical shopping tool. Presenting sustainability information upfront reduces hesitation, builds trust, and strengthens relationships between customers and brands. Looking ahead, VoucherCodes envisions a future where every product page is filterable by impact and powered by transparency — enabling informed choices as a natural part of every shopping journey.