Clients
Accredited
News
Latest news
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Current project Replacing analogue CCTV across three London campuses Legacy analogue cameras replaced with a centrally managed IP system across Hammersmith, Ealing Green and Southall. Read the project
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Guide Who can view your CCTV footage? Staff, police, insurers and access requests Only the people your CCTV policy names should view footage, in a private place, with each view logged. You can usually give footage to the police to help with a crime, and to insurers or solicitors where it is needed for a claim. Anyone filmed can ask for their own footage, and you normally have one month to provide it. Read the guide
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Guide Upgrading analogue CCTV to IP: what you can keep and how to phase it You rarely need to replace an analogue CCTV system in one go. Recent HD analogue cameras and existing coax cabling can often be reused through hybrid recorders, encoders or Ethernet over coax, while the most important cameras move to IP first. A survey establishes what is worth keeping. Read the guide
Reviews
What our clients say
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The clear and reliable sound quality has greatly improved communication between staff and customers, especially during busy hours.
Candace Moreau Pharmacy · Counter audio
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The ability to control and monitor access to sensitive areas has enhanced our security, ensuring that only authorized personnel can enter critical zones.
Martin Reid Logistics · Access control
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The CCTV system allows us to monitor key areas in real-time and provide an additional layer of protection for both students and staff.
Louise Turner School · CCTV
Services
Our services
A complete range of electronic and physical security services, from CCTV and access control to security screens, doors and gates manufactured in our own workshop.
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CCTV IP, thermal and ANPR cameras, managed through Luxriot or HikCentral. IP · ANPR · Thermal Learn more
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Access control and door entry Card and fob readers, door entry and intercoms for controlled access across your site. Readers · Intercoms Learn more
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Security screens and counters Pay windows, counters and full-height screens in rated glass. EN1063 · EN356 Learn more
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Security doors Rated steel doorsets made in our workshop and fitted across your estate. LPS 1175 · EN1627 · FB4 Learn more
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Gates, fencing and railings Gates, fencing and railings made to the site, manual, access-controlled or motorised. LPS 1175 · Palisade · Mesh Learn more
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Transfer units and hatches Trays, hatches and bulk transfer units for passing items securely through a protected line. Trays · Hatches · EBTU Learn more
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Counter audio Speech transfer systems and Melaphones for clear communication through security glass. Speech transfer Learn more
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Fabrication and welding Bespoke steelwork from our workshop: balustrades, ramps, platforms and repairs. MIG · TIG · Powder coat Learn more
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Maintenance contracts Annual servicing and support for the systems we install. Annual contracts Learn more
Sectors
Sectors we serve
We provide tailored security solutions for a wide range of commercial and public sector environments, each with its own risks and compliance requirements.
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Education Safeguarding and site access Learn more
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Hospitals and healthcare Reception screens and ward access Learn more
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Warehousing, factories and logistics Perimeters, gates and loading bays Learn more
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Police stations and custody Front counters and custody Learn more
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Data centres Layered access and audit trails Learn more
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Construction Site perimeters and welfare Learn more
How we work
Our process
We manage every stage of your project, from the initial site survey through design, manufacture and installation to ongoing maintenance.
Request a free quote
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Site survey
We carry out a free site survey to assess your premises, existing systems, risks and requirements.
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Design
We prepare a detailed specification and drawings tailored to your risks and budget.
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ManufactureIn-house
Screens, counters, doors, gates and steelwork are manufactured to size in our Edenbridge workshop.
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Installation
We install, test and commission the system, with full handover and staff training.
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Maintenance
Annual maintenance contracts and ongoing support keep your system operating reliably.
Our mission
About MerFen Security
Delivering practical, reliable and professionally engineered security solutions that work in the real world.
- 01 Mission
- To design, supply, install and commission security systems for commercial and public sector sites, from new installations to upgrades of existing systems. Most of the large systems we deliver are CCTV and access control, and we also work with building management systems.
- 02 Vision
- To provide integrated electronic and physical security from a single contractor, combining current digital technology with screens, doors and gates manufactured in our own workshop.
Get in touch
Request a free quotation
- 01Submit your enquiry using the form. You can also get in touch via email or by calling the office.
- 02We will contact you to discuss your requirements and arrange a free site survey where required.
- 03We provide a detailed written specification and quotation.
Helpful information to include
- Any security rating required by your insurer or specification
- Drawings or a specification, where available
- Photographs of the area or opening
- Your required timescale


