“If you’re a company that’s hesitant because of the overwhelming workload B Corp seems to involve, use a consultant like ESG Pro. They guide you the whole way, so it never feels overwhelming. They have the support and the experience to help you find the answers, or create what you need, to achieve certification. Their response was always quick, and in business that goes a long way.”
— Ollie Rastall, Director, Source Supplies
The Client
Source Supplies is a Surrey-based supplier of commercial janitorial and cleaning products, and it also runs a washroom services division. Founded in 2005, it has around 30 employees and turns over about £7 million.
Its customers are mainly facilities management companies, especially commercial cleaning firms, plus many education sector organisations. For nearly a decade, Source Supplies has been making sustainable changes across its operations and talking openly about them.

The Challenge
Source Supplies had sustainable practices and had already done its first carbon report, but it lacked a recognised certification to prove its wider commitment. When major customers asked about its credentials, the business had little to show.
Expectations across the sector were also rising: some tenders were now open only to B Corp companies, and its largest customer expected suppliers to match its own standards.
With no one in the team dedicated to the project, the business had held off on B Corp because of worries about workload, time and resources.
The Solution
After a recommendation from a peer in the industry, Source Supplies brought in ESG Pro as its “temporary right arm” for B Corp certification. That turned the project into a simple business decision instead of a question of internal resources.
The ESG Pro team guided the business through each stage of the assessment, helped it find the evidence it needed or create it, and responded quickly throughout.
The process also showed where existing good practice needed proper documentation. Policies were reviewed and updated, and informal ways of working became clear, recorded processes.
The Result
Source Supplies now has a recognised certification that backs up a decade of sustainable practice. This protects relationships with key customers and lets it bid for B Corp-only tenders.
In Ollie’s words, the project was “a health check on our business that goes further than just a sustainability certification.”
Its policies are now up to date and fit how the company actually operates, and its processes have moved from good intentions to documented practice that the business can celebrate.
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