Reliable, Efficient & Affordable.
Professional security guarding and commercial cleaning for construction sites and commercial properties. Approved subcontractor to Aegis Security Ltd — delivering on sites for Wates, Lovell, Kier, Morgan Sindall, Bouygues and Willmott Dixon.
Security · Cleaning · Construction Specialists
1. Who We Are
SJ Security Ltd is a Cardiff-based security and commercial cleaning company. Founded by Muhammad Zahid, we operate across England and Wales. Contact: info@sjsecurity.co.uk | +44 7490 843941
2. Information We Collect
When you contact us via our website form, we collect your name, email address, phone number, company name and the details of your enquiry. We use this information solely to respond to your enquiry and provide our services.
3. How We Use Your Information
Your information is used to respond to enquiries, provide quotes, deliver contracted services, and maintain our business relationship. We do not sell, rent or share your personal data with third parties for marketing purposes.
4. Cookies
Our website uses a single cookie to remember your cookie consent preference. We do not use tracking cookies, advertising cookies or any third-party analytics cookies without your explicit consent.
5. Your Rights (GDPR)
Under UK GDPR, you have the right to access, correct or delete any personal data we hold about you. To exercise these rights, contact us at info@sjsecurity.co.uk. We will respond within 30 days.
6. Data Retention
We retain enquiry data for up to 24 months for business purposes. Contract-related data is retained for 7 years as required by HMRC regulations.
7. Contact
SJ Security Ltd | Cardiff, Wales | info@sjsecurity.co.uk | +44 7490 843941
Last updated: June 2026
A Different Class of
Security Provider
Cardiff-based and nationally capable. Founded by Muhammad Zahid, a security industry professional with hands-on construction site experience working alongside Willmott Dixon, Bouygues UK, and Morgan Sindall. Two divisions, one accountable team, one invoice.
Latest Projects
“We moved our cleaning and security to SJ Security last year. Having one provider has transformed our procurement process. One contact, one invoice, one relationship — and the quality across both services has been consistently high. Their attention to detail has been consistently high. Our FM contracts have been handled excellently across both divisionsMO certificates in two days. I will not use another provider.”
Manned Guarding & Security Services
Manned Guarding
SIA-licensed, uniformed officers delivering visible deterrence and professional access control. Day, night, and 24-hour cover available nationwide.
Get a quote →Mobile Patrols
High-visibility patrol vehicles covering multiple sites on scheduled or randomised intervals. Written patrol reports after every visit.
Get a quote →Construction Site Security
Protecting tools, materials and plant machinery from theft and vandalism. Working alongside principal contractors and site managers across the UK.
Get a quote →Key Holding & Response
Secure key holding with 24/7 alarm response. Our officers attend so your team never needs to leave home at 3am.
Get a quote →Event & Door Supervision
SIA Door Supervisor licensed personnel for events, licensed venues, and public-facing functions of any size.
Get a quote →Vacant Property Protection
Securing empty buildings against squatters, copper theft and unauthorised access. Regular written inspection reports provided to insurers.
Get a quote →CCTV Guard Response
Where our clients already have CCTV installed, our SIA-licensed officers respond to activations on-site. Integrated monitoring and physical response under one provider.
Get a quote →Patrol & Inspection Reports
Every mobile patrol visit produces a written report. Timestamped, officer-signed, and submitted digitally. Essential evidence for insurance claims and site audits.
Get a quote →Hotel & Hospitality Security
SIA-licensed officers for hotels, serviced apartments and hospitality venues — professional front-of-house presence, guest and staff safety, access control and discreet 24-hour cover that protects your guests and your reputation.
Get a quote →Commercial Cleaning Services
Commercial Office Cleaning
Daily, weekly or scheduled deep cleaning for offices, retail units and commercial properties across the UK. Fully insured, uniformed teams.
Get a quote →Facilities Management
Managed FM contracts covering washroom maintenance, waste management, consumable restocking and window cleaning. One supplier, one invoice.
Get a quote →Post-Construction Deep Cleans
Builders cleans, sparkle cleans and pre-handover preparation for residential and commercial developments. Completed to developer timescales.
Get a quote →Hotel & Hospitality Cleaning
Housekeeping and communal-area cleaning for hotels and serviced accommodation — guest rooms, lobbies, corridors and washrooms kept spotless to hospitality standards, with flexible daily and turnaround schedules.
Get a quote →What Sets Us Apart
No Unlicensed Personnel — Ever
Every officer is SIA-verified before deployment. Enhanced DBS checks on all staff. Your compliance is our responsibility.
Full Documentation on Every Visit
Service certificates, patrol reports and maintenance records delivered with every job. Never caught without evidence during an audit.
24 / 7 Operational Capability
Our control room is staffed around the clock. Emergency callouts and incident reporting available night or day.
Transparent Pricing
No hidden call-out charges. No admin fees. Clear written quotes before starting any work, always.
One Supplier, Two Services
Security and cleaning under one contract. Simpler procurement, better value, single point of contact for all FM needs.
Local Knowledge, National Reach
Cardiff-headquartered with operations across England and Wales. We understand local requirements and deliver nationally.
Completed & Handed Over
Construction and residential sites secured and delivered for the UK’s leading principal contractors across South Wales.
🛡 Security
SIA-licensed construction site security delivered for Wates throughout their Llanrumney residential scheme.
🛡 Security
Site security and access control delivered for Wates on the Cardiff Gas Works (IKEA) development.
🛡 Security
Manned guarding and mobile patrols delivered for Lovell across their Crickhowell and St Mellons sites.
🛡 Security
Construction site security and patrol coverage delivered for Kier on the Pen-y-Bryn project.
🛡 Security
Residential development security delivered for Taylor Wimpey at Parc Llandaff, Cardiff.
Active Deployments
Live security deployments in progress with major contractors and Cardiff Council.
🛡 Security
Active site security deployment for Cardiff Council at St Mellons.
🛡 Security
Live construction security deployment for Morgan Sindall at the Willows High School build.
🛡 Security
Site security in progress for McLaren on the new Cardiff Arena development.
🛡 Security
Active deployment for Bouygues at the ATC site, Rhoose.
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Live site security for Willmott Dixon on the Bishop, Merthyr project.
Your Site Could Be Our Next Project
Get in touch for a free site survey and proposal within 24 hours.
Request a Free QuoteHow Can We Help?
Whether you need a quote for manned guarding, office cleaning, or a combined package — get in touch and we will respond fast.
Contact us for a quote.
Already approved on Constructionline and CHAS. We can be on your approved supplier list and on-site quickly.
Request a Free Quote
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