A D Security Systems Ltd
Brentwood, Essex
Checkatrade member since November 2025
Services
- Alarm Response
- Burglar Alarm - Installation
- Burglar Alarm Servicing
- Call / Door Entry Systems
- CCTV - Installation
- CCTV Repair
- Electric Gate Repair
- Electric Gate Supplier
- Emergency Alarms / Security Service
- Fire Alarm Installation
- Fire Alarm Servicing
- Fire Risk Assessment
- Gate Automation
- Intercom Entry Systems
- Intruder Alarms
- Security Assessment
- Security Solutions / Access Control
Customer Reviews
Write a review10 /10
Based on 4 reviews over the past 12 months
Quality of work
10
Reliability
10
Communication
10
Reviews (136)
10 Professional business, excellent service.
Posted 26 January
Very professional business, we have used AD security on 2 of our properties and been incredible impressed with the standard of work carried out. Always willing to support and offer advise, after sales support is incredible.Verified reviewerJob location: IG910 Honest, professional and friendly and would highly recommend.
Posted 12 January
We have had lots of work carried out by AD Security over the years both at our previous address and new. We have recommended them to family who are as happy as us with the work AD Security carry out. We can always rely on them for their honest and professional opinion. Their maintenance subscription option is a godsend and takes away the pressure of remembering to book a services etc. We also know that we can call if we have a question. We would highly recommend AD Security and would be happy to speak to anyone who needed first hand assurance.Verified reviewerJob location: CM410 Great company
Posted 02 December 2025
Job location: E16AD are so good and professional . I have used them for years and they are awesome always on time no messing around. When you call the office they are polite listen to what you want. The work is of an excellent quality I really recommend AD security10 Alarm System Installation
Posted 02 December 2025
A D Security Systems Ltd delivers exceptional home security services at every level. Jack and his team provided outstanding service from start to finish, combining technical expertise with a genuinely friendly and professional approach. They took time to understand our specific requirements and delivered exactly what we needed with high-quality products. Their highly skilled engineers are not only technically competent but also courteous and helpful throughout the entire installation process. The after-sales support has been equally impressive, demonstrating their dedication to long-term custoVerified reviewerJob location: CM1510 CCTV and Alarm System Installation
Posted 11 March 2022
We highly recommend Jack and the team, they were professional, very friendly and polite. They understood what we wanted and did a brilliant job from start to finish. They were very understanding when there were delays due to the Pandemic. We will be using them again to add 2 more camera's in the near future. Brilliant team and company, cannot fault their services!!Verified reviewerJob location: CM1510 New security system
Posted 11 February 2022
Very professional pleased with the work I would recommend this company.Verified reviewerJob location: CM5
Photos
Company Info
Owner
Mr Jack Aldridge
Ltd Company
1 years on Checkatrade
VAT Registered
No
A D Security Systems Ltd is an Essex based company covering London and all surrounding areas.
Our engineers are experienced with domestic, commercial, public sector and high security bank alarm systems. We have a wealth of experience across a wide range of security systems which include:
- Intruder Alarms
- CCTV
- Door Entry systems
- Access control
We install, maintain and repair all types of security systems. Providing our customers with options to suit each individual’s needs is at the heart of our mindset.
A D Security work closely with our security representatives to deliver the latest technology to our clients. With our new cloud-based software we can monitor your alarms remotely, carry out system checks, update firmware or programming and remote reset facilities all with an instant response.
AD Security are proud to be an accredited company with the SSAIB which are the regulatory body to ensure security companies offer the highest standards to their customers.
Accreditations and awards
This trade passed up to 12 Checkatrade vetting checks
Member since November 2025
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