OUR STORY
A family-run security company trusted by Milton Keynes since 2009
Who We Are
Guardian Security was founded in 2009 by David and Karen Marshall with a simple belief: every home and business in Milton Keynes deserves access to professional security at a fair price.
Starting from a small workshop in Wolverton, we have grown to a team of 18 engineers, installers, and support staff — but we have never lost the personal touch that sets us apart from the national chains. When you call Guardian, you speak to someone who knows your system, your property, and your name.
We earned our NSI Gold approval in 2014 — the highest standard achievable in the UK security industry — and have maintained it every year since. Our engineers are SIA licensed, DBS checked, and continuously trained on the latest technology.
Today, we protect over 2,500 homes and businesses across Milton Keynes, Bedford, and the surrounding counties. From a single camera to a multi-site enterprise system, we approach every installation with the same care, professionalism, and attention to detail.
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Installations Completed
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System Uptime
Our Values
Trust
We earn trust through transparency, honest advice, and doing what we say we will do. No hard sell, no unnecessary upgrades.
Quality
We use professional-grade equipment from trusted manufacturers. Every installation is tested, documented, and warrantied.
Service
Local means accountable. We are here when you need us — not a call centre three hundred miles away.
Our Accreditations
NSI
GoldSSAIB
SIA
Police Approved
What Our Clients Say
“Best security decision we ever made. The Guardian team were professional, friendly, and explained everything in plain English. Our home has never felt safer.”
John & Claire Smith
Homeowners, Shenley Church End
“After two break-ins, we needed a company we could trust. Guardian Security delivered a system that works flawlessly. The 24/7 monitoring gives us real peace of mind.”
David Thompson
Homeowner, Bradwell Common
“The access control system has transformed how we manage our warehouse. Complete audit trail, easy to add temporary staff, and the integration with our CCTV is seamless.”
Sarah Mitchell
Operations Director, MK Logistics
Protect What Matters Most
Schedule your free security assessment today and discover how Guardian Security can safeguard your home or business.
Schedule Free Assessment