The 2025 Impact Report from B Corp certified Sustainable Wedding Alliance opens with the stories of real wedding businesses cutting carbon and rethinking their supply chains, with the full methodology and B Corp framework data published alongside for anyone who wants to see the working
A florist who now grows 85% of the flowers she sells, saving an estimated 28 tonnes of CO2e by ending her reliance on imports. A venue that rebuilt its bar around British spirits, local producers and plant-based alternatives to imported produce. Businesses growing their turnover while their emissions stay flat or fall. These are the opening chapters of the Sustainable Wedding Alliance’s 2025 Impact Report, released this week on its newly rebuilt website.
The stories belong to members of the Alliance, the UK’s leading body for sustainability in the wedding industry, which puts sustainability at the heart of member businesses through training, resources, a clear framework and independent verification. Since its founding in 2021 the Alliance has supported 158 wedding businesses, with 98 current members and 30 having completed its independent accreditation. Its Carbon Literacy Training has trained 275 wedding professionals, who have together pledged an estimated 213 tonnes of CO2e reductions.
The report is structured against the eight areas of the B Corp framework, and as a certified B Corporation the Alliance publishes the full data, methodology and caveats within the report itself, so that any reader who wants the detail behind the stories can find it.
“We believe people engage with real impact on people and planet when it’s told as a story, so this report leads with the stories of the businesses doing the work,” said Michelle Miles, founder and CEO of SWA. “But the facts matter just as much, and they’re all still there. If anyone wants to see our working, the numbers, the methodology, the caveats, it’s there for everyone to see. Transparency is so important to us.”
Russ Avery, sustainability marketing specialist and SWA advisory board member, helped develop the report’s member-led narrative using members’ own impact reports.
“Behind every figure in this report is a business making real changes to how it works,” said Russ. “We wanted to bring those stories to the forefront, showing what members have achieved and how they’ve done it. The data provides the evidence, while the stories help other businesses see what’s possible for them.”
The report also captures the demand side: with recent industry research showing that over 80% of couples now consider sustainability when planning their wedding, credible sustainability credentials have become a commercial advantage for suppliers as well as an environmental necessity.
The 2025 Impact Report is available at https://sustainableweddingalliance.com/our-impact.
Author: Kizzy Allott
Kizzy Allott is Publisher at Event Industry News, where she has been a driving force behind the brand for over a decade. With a deep understanding of the events sector and a passion for storytelling, Kizzy leads the platform’s commercial and content strategy, connecting the industry through news, insights, and meaningful conversations. She is dedicated to championing innovation, amplifying industry voices, and ensuring event professionals stay informed, inspired, and future-focused.
