Our Certifications & Accreditations
At Top Lock, we are committed to delivering the highest standards of workmanship, safety, and customer satisfaction. We are proudly certified by the UK's leading industry bodies.
Proud ASSURE Certified Installer
ASSURE is an official Competent Person Scheme authorised by the UK government. It serves as a seal of quality and professionalism for homeowners, validating that Top Lock works to strict technical standards, complies with local building regulations, and protects your consumer rights.
Key elements of ASSURE include:
- Verified installer technical competence
- Strict compliance with UK building regulations
- Random quality assurance audits and inspections
- Direct access to extended product warranties
- Consumer protection and dispute resolution backing
Homeowner Leaflet
Endorsed Which? Trusted Trader
Which? is the UK's leading consumer champion, and their Trusted Trader endorsement is one of the most respected accolades a local contractor can achieve. To become a Trusted Trader, our business underwent a rigorous assessment by a trading standards professional to inspect our work quality, customer care standards, and pricing structures.
What this means for you:
- Rigorous assessment of business procedures
- Face-to-face evaluation by a trading standards professional
- Comprehensive credit and financial health check
- Customer reference checks for quality verification
- Commitment to the Which? Trusted Traders Code of Conduct
CHAS Accredited Compliant Contractor
CHAS (Contractors Health and Safety Assessment Scheme) is the UK's leading provider of risk prevention, safety, and compliance verification. Our accreditation as a CHAS Compliant Contractor is a formal recognition that Top Lock adheres strictly to core health and safety standards on site, providing peace of mind to our residential and commercial clients alike.
Core elements of CHAS Compliance:
- Full compliance with UK health and safety legislation
- Rigorous risk management and prevention assessments
- Recognised pre-qualification standard across the UK
- Ongoing annual monitoring of safety practices
- Demonstrated safety competence to clients and partners
Safe Site Guarantee
Our teams are fully trained, risk-assessed, and compliant with all UK health & safety standards.
Why Accreditations Matter to You
Choosing an accredited installer like Top Lock guarantees more than just a fitting—it guarantees excellence and security.
Guaranteed Security
Strict building regulations and technical competence tests ensure your doors and windows perform to the highest safety and security standards.
Long-term Value
Certified installations qualify for extended product warranties, protecting your home improvement investment for years to come.
Consumer Protection
Backed by Which? Trusted Traders and ASSURE, you have access to official dispute resolution mechanisms and guaranteed quality of service.
Work with a Certified Partner
Choose safety, quality, and consumer backing for your next home improvement project.