About

Delivering critical IoT connectivity for over 30 years

Founded in 1996 as a UK alarm signalling provider, we’ve grown into a European leader in critical connectivity, now trusted with ensuring over 3 million connections across diverse industries.

Our commitment to trust, security and innovation

For critical applications, trust, reliability and security are non-negotiable. That’s why we design tailored IoT solutions, ensuring dependable performance and an exceptional customer experience. We’re committed to continuous innovation, delivering the most resilient and secure solutions on the market.

Our proactive approach ensures you stay ahead of industry security demands, giving you peace of mind knowing your systems are protected 24/7, no matter what.

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Our solutions give you unmatched performance in the most demanding environments, including:

Building & Security

Secure connectivity for building systems, including alarm systems, security camera and IoT smart city applications.

Healthcare and telecare

Enabling critical health and safety support for emergency response, patient monitoring and telecare services.

Infrastructure

Providing trusted connectivity for essential utilities like water management and energy distribution.

Industrial

Resilient solutions for remote asset management, health and safety monitoring and Faraday cage environments.

Transport & Logistics

Reliable connectivity for fleet management, EV charging and asset tracking with multi-network SIM solutions.

Utilities

Cyber-secure connectivity for smart meters, renewable energy, and EV charging infrastructure.

Retail & Hospitality

Seamless, cyber-secure operations for POS systems and self-service kiosks.

Commercial

Scalable connectivity for secure data transmission, payment terminals and remote management.

Why choose CSL?

Expert Support and Fully Managed Solutions

We go beyond just providing technology; our team offers a fully managed service that anticipates and resolves issues before they affect your operations.

Future-proof Connectivity

The tech landscape evolves quickly. Our future-proof solutions adapt seamlessly, ensuring your critical applications stay connected, no matter what.

Customer-centric Approach

At the heart of everything we do are the lasting partnerships we build with our customers. By truly understanding your unique needs and challenges, we customise our solutions to provide the reliability and efficiency you can count on.

Join our award-winning team

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Proudly recognised as one of the UK’s Best Workplaces™ in 2025, we’re dedicated to fostering a supportive, inclusive and diverse environment. If you’re passionate about innovation and making a real impact in IoT connectivity, explore our career opportunities today. We’d love to hear from you.