About Constant Security Services
Your Security – Our Priority – Since 1985
Trusted Security Expertise
Constant is an independent, family managed and national award-winning specialist in the provision of security services in the UK, working to the highest possible standards.
Since incorporation, we’ve grown to become one of the largest independent security specialists. Our journey has been driven by one thing: a relentless commitment to excellence.
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More Than Protection
For over four decades, we have partnered with clients across sectors to deliver trusted, value‑driven security solutions that combine industry leading technology with the power of exceptional people.
From frontline guarding and mobile response to fully integrated support services, as a trusted security services company, we deliver more than protection, we provide peace of mind.
We don’t just safeguard assets; we instil confidence, champion innovation and create lasting value for every client we serve.
Frequently Asked Questions
Constant is an independent, award‑winning, family‑managed security specialist with over 40 years’ industry experience, with a genuine focus on our people, clients and communities.
We deliver professional guarding, mobile and technology‑led security solutions, combining traditional values with modern innovation.
Every contract receives personal oversight from senior management, ensuring quick decisions, consistent standards and long‑term stability built on trust and accountability.
Constant operates across the UK but is particularly strong in the North and Midlands.
Our clients and colleagues are supported by regional management teams, our 24/7 control room and local supervision to guarantee responsive service wherever clients and colleagues need us.
As an independent UK business, we’re agile and adaptable.
We make decisions locally, not through corporate layers, allowing us to tailor service delivery, pricing and staffing quickly around our clients’ evolving needs.
Founded in Yorkshire in 1985, Constant began as a small family business with a clear focus on reliability and care.
Today, we remain a family‑managed business in the broadest possible sense with many colleagues having exceptional lengths of service.
We have led the way through technological and societal change, continually adapting how we work with Baby Boomers through to Gen-Z. We have successfully navigated significant events such as national strikes, global pandemics, floods, terrorists attacks and everything in between.
Constant is an NSI Guarding Gold accredited company and an SIA Approved Contractor continuously ranked in the top 5% quality provision in the country.
We also maintain ISO 9001:2015 certification and have received multiple national awards recognising service quality and employee engagement.