At Nexus, we deliver reliable, professional security outsourcing solutions tailored to businesses, commercial properties, construction sites and vacant premises across the UK. Our responsive, nationwide service is built around protection, accountability and rapid response — giving clients complete confidence that their people, property and assets are secure 24/7.
The UK’s trusted specialists in outsourced security solutions.
End-to-end security support — from keyholding and alarm response to guarding and patrols.
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Introducing the Link App - instant interactive reporting.
Dynamic statistics, issue led & feature rich - Link is THE Management Information tool.
About Nexus
Security Service Experts
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Keyholding & Alarm Reponse -
Mobile Patrols -
Locks and Unlocks -
Vacant Property Inspections -
Guarding Solutions & People Services
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15,000 +
Active sites
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1.5 million +
Security activities completed
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Flexible Pricing
For your project
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24 Hour Service
Round the clock security
What our customers say
Mass Mobilisation
“Nexus have recently completed what we consider to be the largest mobilisation of keyholding sites that has ever been undertaken in the UK marketplace. The project was highly managed from start to finish and complaints ran at a ratio of less that 0.01% after the project started. They are our partner of choice.”
Security Director
Why Partner With Nexus?
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Certified Guarding Experts
We're SIA approved and proud holders of COP 119, ISO9001, ISO14001 and ISO45001.
Contact us → -
Service Guarantee
Nexus are the UK's largest Keyholding and Alarm Response provider, with 24/7 response.
Service Overview → -
Tech-Driven Security
Link provides tailored report settings, key management, SLA dashboards and GPS tagging.
Download the Link app →
Scheduled & Adhoc Security Services
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Scheduled Security
Reliable, recurring security coverage delivered seamlessly, so your operations stay protected without ongoing coordination or repeated requests.
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One-Off Demands
Flexible support for urgent requests, special events, or unexpected needs, coordinated quickly through our responsive service team.
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Long Term Protection
Discover how Nexus can strengthen performance, reduce operational pressure, and support sustainable business growth.
What our customers say
People Services Specialists
“I would like to express our thanks to you and your company for the amazing support you have provided in what have been very challenging times. With your support we maintained a safe working and shopping environment for both customers and colleagues, from panic buying to social distancing we were a reassuring presence. We established strong working relationships and robust structure that has enabled all the good work we have achieved, it has been a pleasure working with you.”
National Retailer
