The Client & Challenge
A leading UK retailer was served with enforcement notices from water authorities in relation to fats, oils and grease entering the wastewater system. With multiple outlets on site, including cafés and food preparation areas, the issue posed both regulatory and reputational risks.
The client required a partner who could move quickly, identify practical solutions, and deliver them with discretion. This was a sensitive project, requiring careful management to ensure compliance while protecting the client’s public profile.
Confidential Major UK Retailer
Our Approach
Key surveyed 13 stores to assess existing drainage conditions and design tailored solutions. Mechanical grease separation units were installed, diverting fats, oils and grease into food waste streams where they can be managed and recycled.
The programme was delivered discreetly at every stage, from survey through to installation, with no disruption to store operations.
Confidential Major UK Retailer
Delivery in Detail
Survey, design and installation of grease separation systems across 13 trial stores
£250,000 invested in the trial phase, forming the basis for a wider estate rollout
Bespoke solutions developed for each store based on local drainage conditions
Systems integrated with food waste management to divert fats, oils and grease from wastewater
Scheduled maintenance on a three to six month cycle managed by client-appointed providers
Confidential Major UK Retailer
The Results
The trial programme brought the client into compliance, removing the risk of further enforcement action and avoiding reputational damage. It also created a repeatable model for future rollout, giving the client confidence that the challenge had been resolved sustainably and at scale.
Confidential Major UK Retailer
Sustainability and Modern Methods
The project delivered direct environmental benefits by preventing fats, oils and grease from entering wastewater networks. By diverting this material into existing food waste streams, the client reduced pollution risks and strengthened its wider sustainability commitments.
This approach ensures that compliance goes hand in hand with environmental responsibility, creating long-term value beyond regulatory requirements.
Confidential Major UK Retailer
Nationwide Capability
This project highlights Key’s ability to manage sensitive compliance challenges with discretion while delivering sustainability gains. By combining surveying expertise, bespoke design and professional installation, Key enables major retailers to stay ahead of regulation, protect their reputation and reduce their environmental footprint at scale.
