MAS Systems

What MAS Systems does

MAS Systems Limited is a UK-based electrical and security systems installation contractor headquartered in Herstmonceux, East Sussex, operating across London and the South East of England. Founded in 1998, the firm delivers design, installation, commissioning, testing and maintenance services across eight core service lines: electrical installation, CCTV, access control and door entry, fire alarms and emergency lighting, data and voice networking, maintenance and repairs, testing and inspecting, and gate automation. The work is delivered by field engineers qualified to the 18th edition IEE Wiring Regulations with ECS cards and current health and safety certification, and the firm holds the principal UK sector accreditations: NICEIC approved contractor and domestic installer, NSI approved installer for CCTV, CHAS, Constructionline, TrustMark and CSCS membership. Customers span industrial, commercial, domestic and public sector segments, with named logos including Heathrow T2, the Victoria & Albert Museum, Palace of Westminster, NHS, MOD, Department of Education schools, Four Seasons, Mandarin Oriental, Marriott, Le Meridien, Skanska, and several tier-one construction contractors.

The business runs a sales-led, direct-delivery model. Projects are managed by experienced project managers and foremen working in close contact with clients, with services sold on a quote-based, project-priced basis and supported by both long-term maintenance contracts and one-off service calls. Pricing is not publicly disclosed and is tailored to project scope and complexity. The firm has built its customer base heavily through referrals, and its marketing channels are predominantly word-of-mouth plus a content-led company website displaying accreditation badges (NICEIC, TrustMark, CHAS, Constructionline). The legal entity is MAS Systems Limited, a private limited company registered in England and Wales (Company No. 03580528, VAT 702671065), led by Managing Director Mark Silvester, with no parent company, subsidiaries, external investors, or M&A activity disclosed in the available source material.

Revenue and financial data are not publicly disclosed. Headcount is reported in the 11-50 employee band, consistent with a small regional contractor. The technology stack is conventional electrical and security installation equipment sourced from major UK suppliers, with no proprietary software, AI or platform component referenced. The firm's competitive position rests on its accreditation stack, qualified workforce, enterprise reference list, and regional reputation rather than on technology differentiation or scale.

Name

MAS Systems

Legal name

MAS Systems Limited

Website

https://massystems.net

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

11–50 employees

Short description

UK-based electrical and security systems installation contractor founded in 1998, serving industrial, commercial, domestic and public sector customers across London and the South East. Delivers NICEIC- and NSI-approved design, installation and maintenance across electrical, CCTV, fire alarm, access control and structured cabling disciplines.

Ownership category

akta.pro rank

Product category

Electrical and Security Installation Services

NAICS

Security Systems Services (except Locksmiths) (561621)

SIC

Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Control Panel, Keypad & Siren Installation/Replacement (HSAHABAE)

Keywords

• Electrical installation services
• Security system installation
• Fire alarm systems
• CCTV installation
• Structured cabling services

Headquarters

HQ city

Herstmonceux

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure, Supply Chain

Revenue model

1. Electrical Installation Services: Design, installation, testing and commissioning of electrical systems for residential, commercial and industrial sectors. Revenue generated through project-based service delivery including new installations, upgrades and compliance testing.
2. CCTV and Security Systems: NSI approved installer providing CCTV system design, installation and maintenance. Equipment sourced from major national suppliers with full after-installation support including data protection compliance assistance.
3. Fire Detection and Alarm Systems: Design, installation, commissioning and maintenance of fire alarm systems to BS5839 2017 standards. Services range from domestic single zone to large commercial and institutional multi-zone systems including Victoria & Albert Museum and schools.
4. Data and Voice Networking: Design, supply and installation of structured cabling including Category 5e, Category 6, and fibre optic cabling. Single point of contact for office moves including telephone systems, computer networking and power requirements.
5. Access Control Systems: Installation of access control systems from basic single door to multi door, multi site installations. Includes door entry phones, card swipe systems, proximity systems, coded access systems, gate controllers and barriers.
6. Maintenance and Repair Services: Ongoing maintenance and repair services for both facility managers requiring long-term contracts and individual customers requiring one-off service. Services provided for large commercial sites and residential properties.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

MAS Systems is an electrical and security installation services contractor that designs, installs, commissions, tests, and maintains electrical, CCTV, access control, fire alarm and emergency lighting, data/voice networking, gate automation, and testing/inspection systems. Services are delivered by NICEIC- and NSI-qualified engineers to industrial, commercial, institutional and domestic customers across London and the South East of England.

Product overview

MAS Systems is an electrical and security installation services company offering a portfolio of eight distinct service offerings. The core offerings include Electrical Installation, CCTV Systems, Access Control & Door Entry, Fire Alarms & Emergency Lighting, and Data & Voice Networking, supported by Maintenance & Repairs, Testing & Inspecting, and Gate Automation services. These services are designed to work independently or as integrated building systems for residential, commercial, and industrial clients in London and the South East.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrical Installation Design, installation, testing and commissioning of electrical systems for residential, commercial and industrial customers, delivered by NICEIC approved engineers qualified to 18th edition IEE Wiring Regulations and compliant with BS and NICEIC regulations.
• CCTV Systems CCTV system design, supply, installation and maintenance delivered as an NSI approved installer, using equipment sourced from major UK suppliers and including Data Protection Act compliance assistance.
• Access Control and Door Entry Installation of access control systems ranging from basic single-door to multi-door, multi-site deployments, including door entry phones, card swipe systems, proximity readers, coded access, gate controllers and vehicle barriers.
• Fire Alarms and Emergency Lighting Design, installation, commissioning, and maintenance of fire alarm systems to BS5839 2017 standards (Type L life safety and Type P property protection), plus emergency lighting systems to BS5266 Part 1 + 7 and portable fire extinguishers to BS EN3.
• Data and Voice Networking Design, supply and installation of structured cabling systems including Category 5e, Category 6 and fibre optic cabling (single mode and multi mode), including termination, testing and single-point-of-contact project management for office moves covering telephone, computer networking and power requirements.
• Maintenance and Repairs Ongoing maintenance and repair services covering the private and commercial sectors, providing professional solutions to facility managers under long-term contracts and to individual customers on a one-off service basis.
• Testing and Inspecting Electrical testing and inspection services including regular testing of installations, PAT testing, power and lighting system checks, voltage control, and certification to the 18th edition IEE Wiring Regulations as a registered NICEIC member.
• Gate Automation Installation of gate automation systems including electromechanical rams, articulated arms, sliding gate operators, rising vehicle barriers, plus audio/video entry equipment, electromagnetic locks, digital keypads and swipe cards.

Named customers24 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Six partnerships are on record, tiered core and minor.

• NICEICcoreOthersNICEIC is one of the most professional bodies regulating electrical contractors. MAS Systems is approved by NICEIC as both electrical contractors and domestic installers, providing complete quality assurance to customers and ensuring compliance with relevant BS and NICEIC regulations.
• National Security Inspectorate (NSI)coreOthersNSI is the UK trade body for the security and fire industries. MAS Systems is an NSI approved installer for CCTV systems, demonstrating compliance with industry standards for security system installation.
• ConstructionlineminorOthersConstructionline is a UK government-owned company providing pre-qualification services for construction contractors. MAS Systems is listed with Constructionline, enabling easier engagement with public sector procurement.
• CHASminorOthersCHAS (Contractors Health and Safety Assessment Scheme) provides health and safety accreditation for contractors. MAS Systems holds CHAS accreditation demonstrating health and safety compliance.
• Construction Skills Certification Scheme (CSCS)minorOthersCSCS is a national initiative by the Construction Industry Training Board to raise standards of workmanship and health and safety. MAS Systems belongs to CSCS with all staff holding ECS cards.
• Major CCTV Equipment SupplierscoreTechnology or IntegrationMAS Systems uses some of the country's largest suppliers of CCTV equipment, giving them access to quality products and ensuring systems are designed and installed to full potential.

Scale indicators2 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• Chubb Fire & Security: Major UK provider of fire safety, security, and monitoring services, part of Carrier Global. Operates broadly across the same fire alarm, CCTV, and access control installation and maintenance categories that MAS serves, but at national scale.
• Securitas UK: Global security services group with UK operations spanning guarding, electronic security, and fire & safety solutions. Overlaps with MAS's security installation and service capabilities but at a vastly different scale and breadth.
• NG Bailey: One of the UK's largest independent electrical and mechanical services contractors. Operates across electrical installation, structured cabling, fire and security systems, competing for the same commercial and institutional projects as MAS but at national scale.
• Mitie Security: Major UK facilities management and security services provider. Offers integrated fire, security, and electrical building services as part of a broader FM portfolio, directly competing for managed services contracts with MAS.
• ADT UK (Tyco): Large national provider of intruder alarms, CCTV, access control, and monitored security services. Overlaps with MAS's security installation business but operates at much greater scale with recurring monitoring revenue.
• SSE Contracting: UK-wide electrical contracting arm of SSE, providing commercial electrical installation, lighting, and building services. Competes for the same electrical contracting projects MAS pursues, particularly at scale and across regions.

Direct peers

• ClearView Communications: UK specialist in CCTV, access control, fire, and integrated security system design, installation, and maintenance. Closely comparable in offering mix and customer base, particularly across commercial and public sector clients.
• Evolution Security: UK NSI-approved installer of integrated security systems including CCTV, access control, intruder detection, and fire alarms. Comparable in size, service mix, and customer type to MAS, serving commercial and public sector clients.
• Total Integrated Solutions (TIS): UK-based independent integrator of fire, security, CCTV, access control, and communications systems. Direct competitor in the same regional installation services market, offering a comparable multi-service portfolio to commercial and public sector clients.
• Quadrant Security Group: UK-based NSI-approved security systems installer providing CCTV, access control, intruder alarms, and integrated security solutions to commercial clients. Comparable service portfolio and accreditation profile to MAS.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mas-systems-limited

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about MAS Systems