Approved across the frameworks that matter
WN1 operates within rigorous frameworks and compliance structures recognised across industry sectors
Frameworks we operate under
WN1 holds approval across major government and industry frameworks. Our accreditations span energy efficiency, environmental management, and operational safety standards recognised by public and private sector organisations including:
- Everything Estates
- Constellia
- Nepro3
- Crown Commercial Services
- Bloom
- Nepro Innovation
- YPO - Yorkshire Purchasing Organisation
- Cardiff County Council
























Our accreditations
Independently verified and actively maintained across all sectors.

CHAS and Safe Contractor approval
Confirms our health and safety practices exceed industry requirements.

ISO 9001 quality management
Demonstrates our commitment to consistent operational standards.

ISO 14001 environmental management
Building improvements from insulation to heating systems that reduce consumption and improve comfort.

ISO 45001 safety
ISO 45001 is the internationally recognised standard for Occupational Health and Safety (OH&S) management systems.
Policies that guide our work. Each policy is documented, regularly reviewed, and accessible to clients who need assurance of our operational integrity.
Covers equipment installation, site procedures, emergency protocols, and staff training requirements.
Addresses waste management, energy efficiency, and sustainable procurement across all operations.
Ensures consistent delivery standards and continuous improvement in all client engagements.

Questions
Find answers to common questions about our approach, timescales, and what to expect.
How long does an assessment take?
Every project starts with a free site survey, covering your fittings, energy consumption, and hours of operation. From that we build your saving model and installation plan before you commit to anything. Timing depends on the size of your site, and we'll confirm a date when you book your free audit.
What’s the typical payback period?
There isn't one to wait for. Sustainable Estates Programme means zero up front cost, so you're not recovering capital, you're paying through the saving the project generates. For LED, savings start the day the new fittings are commissioned. For solar, they appear from your first full billing cycle. We model your specific numbers in the free audit, so you see them before you sign.
Do solutions disrupt daily operations?
No. We schedule around your operation, not the other way round. For schools, that's evenings, weekends, and half-terms. For commercial estates, we phase delivery site by site. For NHS and manufacturing sites, we work around clinical or production schedules.
Which sectors do you work with?
Four: Education, Commercial, NHS, and Manufacturing & Industrial. Each has its own procurement route and operational rhythm, and we deliver to fit it.
Ready to start your sustainability journey?
Let's talk about what's possible for your organisation. Our team is ready to listen and advise.


