Welcome To CSS
Experts in Domestic and Commercial Fire & Security Solutions
Complete Security Systems Ltd is a fully accredited and approved company with over 40 years of engineering experience in fire and security systems. We’ve been protecting commercial and residential communities since 2019.
Based in Darlington, North East England, we offer our services throughout the UK.
Protecting Property Starts Here
The right system does more than deter.
Our Security & Fire Protection Services
Comprehensive, reliable systems to keep your home or business safe – 24/7.
At CSS, we specialise in delivering tailored security and fire protection solutions across the UK. Whether you’re securing a commercial property, upgrading your home alarm, or ensuring compliance with fire safety regulations, our expert team is here to help.
Fire Protection
Fire alarms, emergency lighting, and suppression systems designed to protect lives and property — installed to the highest standards.
Security Systems
Protect your premises with expertly installed CCTV, intruder alarms, and access control — built for reliability and peace of mind.
Monitoring Solutions
Our monitoring services provide round-the-clock oversight to keep your property and people safe — always on, always alert.
Why Choose CSS?
Experts in Domestic and Commercial Fire & Security Solutions
Trusted
We’re trusted by homeowners, businesses, and contractors nationwide for reliable protection
Experienced
With 40+ years’ experience, our team delivers proven expertise on every project we complete.
Accredited
Certified by BAFE, SSAIB and more — your systems meet the highest standards of compliance.
Tailored
We design every system around your property, risks, and requirements for truly tailored protection.
Our Accreditations
Trusted by Industry Leaders
Partnerships that prove our commitment to quality and compliance.
We work with leading regulatory bodies and trusted suppliers to deliver fully certified fire, security, and monitoring systems, using the best equipment on the market — giving you complete confidence in everything we do.
