Commercial security systems.
Trusted protection for people, property and business continuity.
TRUST is a very big word in security...
It’s a word used far too easily in this industry, especially considering the responsibility behind it.
Some organisations already know who they trust. You’d be in good company.
After more than 70 years, that trust is never taken for granted.
Talk to a security expert now on
08445 610 578
Commercial Security Services
Security isn’t one-size-fits-all. Every site and every situation is different.
These core services can be tailored to suit your site, risk level and operational needs.
Commercial Security, Delivered Personally
Commercial Security, Delivered Personally
We provide robust commercial security systems and fully trained SIA-accredited staff across Sussex, Surrey and Hampshire, with nationwide coverage when needed.
As a family-owned company, we’ve grown through reliability and trust.
No automated menus, no call centres – when you need us, we answer.
And if there’s a security problem, we solve it.
Technology That Works, Advice You Can Trust
Technology That Works, Advice You Can Trust
We use cutting-edge security technology, but only when it’s right for your site.
You’ll get clear, honest guidance based on a tailored risk assessment.
No unnecessary add-ons. No inflated recommendations.
When your system needs updating, we can phase improvements sensibly.
We listen, understand and deliver peace of mind around the clock.
Imagine how we could help you.
Case Studies
Safeguarding property and staff during an onsite protest
Classic coordinated with police, deployed additional officers and strengthened site controls to protect a mixed-use business hub during a large protest.
The property remained secure, operations continued safely, and staff felt fully protected throughout.
A modern, reliable access control system for a busy office building
Workman needed a modern, centralised solution to manage contractor access across multiple commercial properties. Their existing system was outdated, inconsistent, and open to abuse, making it difficult to verify who was onsite and when, and exposing them to compliance and safety risks.
Frequently Asked Questions
CSG offers a comprehensive range of security services to meet the diverse needs of our clients. These include the installation and maintenance of advanced alarm systems, CCTV, and access control systems.
We also provide manned guarding services, keyholding and response, and specialised security solutions for vacant properties. Whether you’re a commercial client or a residential property owner, we tailor our services to ensure your safety and security.
CSG partners with a wide range of clients across various industries, including Property Management, Landlords, Construction, Retail, and the NHS. Our experience in these sectors allows us to provide specialised security solutions tailored to the unique requirements of each client. We pride ourselves on building strong relationships and delivering exceptional service to businesses of all sizes.
We conduct a comprehensive site survey and provide a tailored recommendation proposal based on the specific needs of each site.
Yes, CSG is proud to be a Living Wage Employer. https://livingwage.org.uk/accredited-living-wage-employers
CSG operates around the clock to ensure the safety of our clients at all times. Our security services, including manned guarding, CCTV monitoring, and emergency response teams, are available 24/7. This ensures that your property remains protected day and night, with rapid responses to any incidents that may occur.
CSG maintains high-quality security services through a combination of external accreditation audits and continuous internal audits. We also ensure that senior management regularly meets with our clients to review and align our services with their needs.
CSG holds a range of industry certifications and accreditations. For more details, please visit our accreditations page.
You can contact us any time through our 24/7 control room, located at our head office in Horsham. We have a dedicated on-call duty manager available to assist with urgent matters, ensuring that any issues are promptly addressed, no matter the time of day or night. Whether you need to report an incident or require immediate assistance, our team is always ready to help.
We specialise in providing security services to the commercial, retail, corporate, and construction sectors.
All shifts and pay rates are accessible to our staff through their employee app, which provides a breakdown of hours and pay rates for every shift. Any payment queries can be raised through the app and are promptly addressed by a member of senior management.