Professional CCTV and wireless alarm installations across Greater london, north kent, middlesex and Essex with no monthly fees.

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Expert installation of CCTV, Alarm Systems & Access Control across Essex and London. Trusted by homeowners and businesses for reliable, professional security solutions tailored to your needs.
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Our Services
Sentinel Shield provides fully insured, professional installations using trusted, industry‑approved equipment — each backed by a 12‑month guarantee for complete peace of mind.
  • CCTV Systems
    We design and install CCTV systems tailored to the specific needs of your home or business. Whether you require simple on‑site recording or a setup that records in one location and is monitored remotely from another, we build solutions that work seamlessly.
    Our services include full system installation, upgrades, and ongoing maintenance, all using the latest CCTV technology. Every system we provide includes a mobile viewing app as standard, giving you secure access to your cameras from anywhere.
  • Alarms
    We install state‑of‑the‑art alarm systems designed to protect your home or business with total reliability. Every system includes a dedicated mobile app, giving you full control and real‑time monitoring of all your security devices in one place.
    Our alarms can be fully customised to suit your environment — whether you need additional sensors such as temperature monitoring, water‑leak detection, or other specialist devices. We also offer comprehensive maintenance packages and a 24/7, 365‑day monitoring service to ensure your property stays protected around the clock.
  • Access Control
    We install advanced access control systems that give you complete control over who enters your property. Our door‑entry solutions allow you to speak with visitors, verify their identity, and grant access remotely with ease.
    Whether you need a simple audio/video intercom or a fully integrated access system for multiple doors, we design and install solutions that enhance security while keeping operation effortless.
Why Us?
No hassle. No pressure. Just reliable, professional security built around you.
  • No Rental here
    You own your system outright — no rental fees. It belongs to you!
  • Local, personal service
    A dedicated local engineer who knows your system — not a call centre.
  • Professional installation (not DIY)
    Every system is professionally installed and configured for your property — no DIY guesswork.
  • Transparent, honest pricing
    Clear, competitive and upfront pricing with no hidden fees or surprise add-ons.
  • 12‑month warranty as standard
    All installations include a full 12‑month warranty for complete peace of mind.
  • Tailored systems, not one-size-fits-all
    Every system is designed around your property, not a pre-set package.
  • Ongoing care if you want it
    Optional maintenance plans for annual servicing, priority support, and system health checks.
  • Flexible upgrades and add-ons
    Easily expand your system over time with additional cameras, sensors, or access control.
  • Easy-to-use mobile app included as standard
    Arm, disarm, receive alerts, view CCTV and check system status — all without monthly app fees.
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