Professional Manned Guarding Across the UK.

Controlled Security Operations Ltd (CSO) is a UK-wide security provider delivering professional, compliant and dependable manned guarding services. We specialise in protecting people, property and critical infrastructure with a blend of highly trained officers and modern security technology. Our focus is simple: proactive protection that keeps your operations moving safely and without disruption.

We supply fully licensed, vetted, and site-ready security officers for a wide range of environments. From commercial premises and construction sites to logistics hubs, retail and vacant properties, we have acquired a vast experience across many different sectors over a decade.

Our teams operate with precision, professionalism, and clear communication, ensuring every client receives a tailored security solution built around their risks, requirements, and operational pressures.

Whether you need long-term guarding, short-notice cover, mobile response, or a complete site protection plan, CSO delivers reliable security you can trust day and night.

Tailored security.

Delivered with precision and professionalism.

Looking for a Career in Security or a Tailored Protection Solution?

Whether you’re searching for new opportunities with the right support or you’re a client wanting to learn more about our services and request a tailored quote, our team is ready to assist.

Visit our contact page and message us on WhatsApp to get started.