Your Security. Our Priority.
Since 1996, ADP Security Systems has been protecting homes and businesses across the South of England. What started as a small, local operation has grown — through word-of-mouth recommendations and a commitment to doing things right — into one of the region’s most trusted and accredited security providers.
Our Story
ADP Security Systems is a privately owned, family-run business built on strong values: reliability, integrity, and a genuine commitment to protecting what matters most to our clients.
From our base in Petersfield, Hampshire, we serve commercial and domestic clients across Hampshire, Surrey, Dorset, Sussex, and Berkshire. Our team of experienced engineers, operators, and security professionals deliver tailored solutions — not off-the-shelf packages.
We’ve grown steadily through recommendation because we believe in long-term partnerships, not short-term contracts. When you work with ADP, you work with a team that treats your security as seriously as you do.
Award-Winning & Accredited
ADP is a multi-award winning business, recognised across the security industry for our commitment to excellence and quality of service.
We hold accreditations from the industry’s most respected bodies including SSAIB, BSIA, SIA Approved Contractor Scheme (ACS), Safe Contractor, and are certified to ISO 9001 and ISO 14001 standards. These aren’t just badges — they reflect our daily commitment to quality, safety, and environmental responsibility.
Our senior management team continues to invest in every area of the business, developing progressive services and technology to stay ahead of emerging security threats.
Everything Under One Roof
From electronic security systems to manned guarding and mobile response — ADP provides complete, integrated protection. One provider, one point of contact, total peace of mind.
CCTV Systems
Design, installation, and maintenance of IP and analogue CCTV systems for complete visual surveillance.
Intruder Alarms
Wired and wireless alarm systems with remote monitoring and rapid response capability.
Access Control
Card, fob, biometric, and intercom systems to manage and monitor entry to your premises.
Fire Alarms
Conventional and addressable fire detection and alarm systems, fully installed and maintained.
Gates & Barriers
Automated gates, barriers, and bollards to control vehicle and pedestrian access.
Mobile Patrols
SIA-licensed mobile patrol officers providing visible deterrence and rapid alarm response.
Keyholding
Professional keyholding and alarm response services — so you don’t have to attend out of hours.
Manned Guarding
Fully SIA-licensed security officers for reception, site patrols, events, and more.
Trusted & Accredited
ADP holds accreditations from the industry’s most respected bodies, giving our clients confidence in the quality and professionalism of our work.






Who We Work With
We cater for private, domestic clients and commercial premises alike. Our clients span construction, retail, hospitality, pharmaceutical, education, healthcare, museums, and both central and local Government.
Whether you need a single intruder alarm for your home or a fully integrated security solution for a multi-site operation — ADP has the expertise and the accreditations to deliver.
Ready to discuss your security needs?
Contact our team today for a free, no-obligation site assessment.
01730 261510

