Cost-Effective 24/7 Commercial Security
Protect your business with our 24-hour emergency response security services
Alarm Response & Keyholding Specialists in the UK
Alarm Response & Keyholding
We hold a set of your keys, allowing us to act on emergencies immediately.
Mobile Security Patrols
A safe and affordable alternative to hiring your own private security team.
Static Security Guards
Perfect for large commercial properties, upholding a strong viual presence.
An Affordable 24/7 Security Company
Mono Security is an SIA licensed and accredited professional security company specialising in alarm response & keyholding, along with a various catalogue of commercial security services and business protection including CCTV monitoring, canine patrol, mobile & static security, open & close and security escorts, we create bespoke packages tailored to your requirements.
With over 50 years of experience and an enviable reputation across the Midlands and Norfolk, Mono is trusted by some of the country’s most esteemed organisations to maintain the safety and security of their premises. Offering an affordable, round-the-clock service, you can rest assured knowing your valuables are in safe hands with our professional security agency.
Short Notice Security Available
Been let down at the last minute? Speak to our team, we offer support on short notice to help you in these circumstances.

SIA Licensed & Accredited
We take our job very seriously and leave no stone unturned to ensure quality and safety for your business.

The Security Agency You Can Trust
What is Keyholding? We hold a set of your keys, allowing us to respond to emergencies instantly. You can secure your property from any potential damages, intruders and other criminal activity for just £1 per day.
The perfect solution if you are a business owner, building manager or public premises manager, we work closely with you to understand your needs. This can include fire alarm activations, granting emergency access, responding to leaks, power cuts, extreme weather events, and any other out-of-hours situation, we are here to help. Working with a licensed and accredited security company provides you with peace of mind surrounding your business.
Additional Security Services
Our security agency offers a wide range of security and monitoring services, allowing us to tailor our package to exactly what you need. Our alarm response & keyholding service opens the door to various additional options. Depending on the type of organisation you are and your premises, you may see how some of these complement your business.
Open & Close Service
Tailor-made solutions to keep your buildings safe and secure during opening and closing hours.
Static Security Guards
The perfect solution for keeping a strong visual presence around large commercial premises.
Mobile Security Patrols
Prevent unwanted activity around your property with an affordable full-time security service.
Canine Patrol Unit
Defer illicit contraband at large group and corporate events and with our licensed canine patrol units.
Security Escort Service
Protect valuable items from theft using a dedicated security transport vehicle with live tracking.
CCTV Monitoring
Keep an eye on your property from our control centre to maintain a safe and secure environment.
Highly Recommended
Most of our business comes from client referrals, for this reason, we let our work do the talking.
Bespoke Security Solutions
Every client and every industry is different, so we create tailored packages to suit your business.
Satisfied Customers
We maintain great client relationships thanks to the high standards we set ourselves.
24 Hour Support
Emergencies can happen at any time, so you can reach us 24 hours a day, 365 days a year.
Security Guards & Patrols
If you run a large commercial building such as a shopping centre, stadium or venue, you already know how important it is to ensure the safety of those in and around the premises. Our static security guards and mobile patrols are equipped with the latest technology to ensure this standard of safety is upheld and will respond to any unwarranted activity in an instant.


Let’s Talk
Don’t leave it until it’s too late, speak to our team today.

Open & Close Service
From retail stores and office blocks to warehouses, venues and stadiums, keeping your property secure during and after working hours is key. With our open & close service, you won’t have to worry about keeping to a tight schedule as our licensed and trained officers can provide full-time or ADHOC support when you need it.
Our Locations
We currently provide our security services throughout the West Midlands, Leicestershire, Northamptonshire and Norfolk, including but not limited to:

Want to find out more?
Want to discuss your needs and requirements with us? Fill out our contact form and a member of our team will be in touch to answer your queries.
Alternatively, you can contact us via phone or email.