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London's #1 Security Guard Company GET A FREE QUOTECALL NOWSecure On Site Security Guard Services
Bespoke and Tailored Services
Dedicated Account Management
SIA ACS Approved Contractor
Secure On Site Security is London’s highest rated security guard company, providing services aimed at protecting homes, workplaces and communities. Our goal is to deliver the highest level of customer service to our clients, offering professionalism, reliability and peace of mind.
We are one of the security companies in London, which is committed to providing our clients with the finest skilled security staff covering a wide range of security services throughout London. We believe security should be: approachable not intimidating, knowledgeable not uninformed, presentable not untidy. Strong not overbearing. Our high standards are maintained through working on-site with clients, meticulous security guard selection and compulsory in-house training. Our experienced account managers are available 24/7 throughout every assignment and do not rest until everything is in place.
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How We work
We will arrange a call to discuss your requirements, such as location, number of guards, dates and times.
If applicable, we will arrange a free site risk assessment. This will give us a better understanding of job and needs.
You will then receive a no-obligation quote from your dedicated account manager.
Once you are happy with your quote, we will then a brief our highly trained SIA license guards.
Your dedicated Secure On Site account manager will be available to help with any further requirements and changes you may need around the clock.
Brands we’ve worked with
Get Protected with Licensed, Trained and Insured Security Guards from Secure On Site Security
Security equals success. Secure On Site Security has been providing security services that allow businesses to grow, events to inspire and public spaces to thrive across the UK. From our highly trained, SIA licensed and fully insured security guards, everything we do is backed up by award-winning customer service and a cutting edge, carbon neutral infrastructure that puts Secure On Site Security on top evidenced by our SIA Approved Contractor Scheme.
Bespoke Security Services Tailored to You
Corporate
Corporate security. Keeping your people, property and assets safe at all times.
Event Security
Robust and discreet to keep your guests safe and your event running smoothly.
Security Guards
SIA licensed and insured security guards available 24/7 throughout the UK.
Industrial
Protect your Industrial site with SIA licensed, trained and insured guards.
News and knowledge
Met Police Retail Crime Tech Rollout: Faster Evidence, More Shoplifters Charged
The Met’s retail crime evidence platform is expanding across London, quadrupling positive outcomes in pilot boroughs. What retailers should do now.
Martyn’s Law Notification Duty: What the SIA’s August 2026 Update Means for Venues
The SIA has clarified the Martyn’s Law notification duty ahead of 2027 commencement. What venues, events and corporate sites need to do now.
Iranian-Linked Network Behind UK Synagogue Plot: What It Tells Security Teams
The threat picture facing UK businesses, places of worship and high-profile residential clients changed materially in April 2026. Counter Terrorism Policing is now publicly investigating whether a series of arson attacks on Jewish community sites in London were...
How We Guarantee Peace of Mind
Every one of our security guards carry a verified SIA license and has passed DBS checks, right to work checks, English language tests and personality profiles.
Every one of our security guards is a full-time Secure On Site Security employee – none are self-employed or sub-contracted.
Every one of our security guards is covered by liability insurance that exceeds £10million, protecting you from unexpected costs.
Every one of our security guards is supported by a 24/7 controller that checks on their status and can be alerted to any incidents or emergency.
Every one of our security guards is treated as a human being, with a range of benefits and a healthy work-life balance – no one is overworked or mistreated.
Book Your Free Security Risk Assessment
To ensure that you receive the most effective security solution possible, we include a free, no obligation risk assessment with every quote. Regardless of whether you choose to use our services, you will be empowered with knowledge of the threats that you face and how you can tackle them.
Serviced London Areas
SOS (Secure On Site Private Security Services) Limited currently holds SIA Approved Contractor Scheme (ACS) status for the provision of Security Guarding and Door Supervision