Security system installers in London

452 security system installers based in and around London.

• R Rja Electrical Services Ltd London · Electrical · 10-49 employees

  RJA Electrical Services are your trusted choice for an Electrician near me in Kent, serving Sheerness and nearby areas. Call now for a fast quote.

• R Rochford Art London · Refurbishment · 1-9 employees

  Rochford Group specialise in luxury residential construction, refurbishment projects and bespoke joinery throughout London and the Home Counties.

• R Rose Electrical Contractors Ltd London · Electrical · 1-9 employees

  Rose Electrical Contractors Ltd specialises in commercial and industrial electrical installations across the UK. Members of NICEIC and ECA, committed

• R Rosguill Developments Ltd London · Main contractor · 10-49 employees

  Rosguill Developments Ltd is an established, award-winning contracting and building company based in London, Radlett, delivering bespoke, cost-effecti

• R Rsl Build Ltd London · Main contractor

  Rsl Build Ltd is a main contractor company based in London, registered at Companies House in 2025.

• S S&S Elevation London · Scaffolding

  S&S Elevation provides commercial and residential scaffolding solutions and alarm services across London, Essex and Hertfordshire. We pride ourselves

• S SA Fire and Security London · Fire protection · 10-49 employees

  SA Fire & Security Systems offers over three decades of experience in delivering effective fire and security systems. As an independent company, we pa

• S SAAR Lighthouse London · Security systems

  SAAR Lighthouse UK Ltd provides bespoke technology solutions, LED screens, video walls, and sports equipment, operating internationally with expertise

• S SafeApproach Services Ltd London · Electrical

  SafeApproach is an electrical and fire safety compliance contractor supporting social housing, commercial and public sector clients with testing, reme

• S Safecity Technologies Ltd London · Security systems

  Safecity Technologies pioneers advanced security solutions, offering a comprehensive suite of services designed to meet the evolving demands of innova

• S Safety Doors Ltd London · Windows & doors

  Best Safety Doors in London & UK, Wooden Door With A Steel Core, Front Doors In Any Design & Colour, You Would Never Tell It's A Safety Door!

• S Sec Data Centre Infrastructure Ltd London · Main contractor · 1-9 employees

  SEC Data Centre Infrastructure Ltd is a new company focused on data centre infrastructure.

• S Sec-Cam Ltd London · Security systems · 1-9 employees

  Sec-Cam Ltd offers premium 4K CCTV systems for supply and installation, with optional affordable monitoring services. Available for rent or purchase.

• S SecureOptics London · Security systems

  SecureOptics provides bespoke, integrated security solutions including CCTV, access control, intruder alarms, and networking for homes and businesses.

• S Securum London · Security systems · 1-9 employees

  Securum offers professional and certified security, alarm protection installation and maintenance services throughout London and Essex in the UK.

• S Sentinel Arc Fire & Security Ltd London · Fire protection

  Protect your assets with our fire and security services. Explore trade partnerships for discreet support.

• S SERBAN DC London · Design & build · 1-9 employees

  SERBAN delivers turnkey data center solutions from planning to commissioning. Scalable, reliable and energy-efficient data centers across Europe and b

• S Servicium Ltd London · Electrical

  Servicium installs and maintains data networks for Internet, wifi, CCTV and more, solving problems for complex commercial, industrial and rural sites.

• S Shield Window Film Ltd London · Glazing · 1-9 employees

  Professional Grade Window Film Company, Shield Window Film. Nationwide installers of window films to commercial, retail & residential sectors.

• S Sigma Support London · Security systems

  Sigma offers a one-stop IT solution for small to medium-sized businesses typically within the M25, providing IT services, support, email, hardware, so

• S Simplex Electrical Ltd London · Electrical · 1-9 employees

  Simplex Electrical is your trusted electrical service provider based in Greater London. Contact us for emergency electricians in London.

• S Sintec UK Ltd London · M&E contracting · 1-9 employees

  Global coverage with offices in the UK, Latvia, USA, and Russia. High quality installation with reliable teams.

• S Skg Locksmith Ltd London · Security systems · 1-9 employees

  SKG Locksmith Limited offers quick, reliable locksmith services in West Hendon for homes and businesses, including CCTV, alarms, and free quotes.

• S Smart Deploy Services Ltd London · Electrical

  UK-based specialists in IoT and LPWAN infrastructure deployment, commissioning, and support. Professional gateway installation, sensor deployment, and

• S Smart Integration Systems London · Security systems · 1-9 employees

  Smart Integration Systems provides cutting-edge integration solutions for businesses and homes, focusing on seamless connectivity and efficient workfl

• S Smart Voltage Solution London · Electrical

  Smart Voltage Solution Limited provides professional electrical and smart home automation services in London. Certified electricians and Loxone instal

• S SMK HANDYMAN LTD London · Refurbishment · 1-9 employees

  SMK Handyman provide reliable, efficient & cost effective property maintenance services for commercial properties and homeowners in London.

• S Socket and Switch (Yorkshire) Ltd London · Electrical · 1-9 employees

  Socket and Switch (Yorkshire) Ltd are domestic installers focusing on residential electrical works. We also offer waste removal, deliveries, power was

• S SoftBrooks London · Security systems · 1-9 employees

  SoftBrooks Limited is a multi-disciplinary technology and telecoms services provider offering cutting-edge digital solutions for organisations looking

• S Solid Starr Solutions London · Electrical

  Solid Starr Solutions builds and manages websites, Google listings, and social accounts for London businesses, offering a transparent, one-person serv

• S Solutions Tailormade London · Security systems · 10-49 employees

  Specialist systems integration for property and estate managers. Lighting control, solar farm security, alarm systems, Dolby Atmos cinema, AV and busi

• S Soni & Sons Electrical Ltd London · Electrical

  Soni & SONS ELECTRICAL LTD offers fully insured, qualified electrical services for domestic and commercial clients in Tower Hamlets and beyond, workin

• S SPACES PROPERTY SERVICES LTD London · Refurbishment

  Spaces Property Services offers high-quality building, maintenance, and property management services for residential and commercial clients in London.

• S Sparkeaze Ltd London · Security systems · 1-9 employees

  Explore top-tier security systems for businesses in Hertfordshire with SparkEaze. Custom solutions for networking, CCTV, and access control to protect

• S Spt Group Services Ltd London · Electrical · 1-9 employees

  SPT Group Services Limited is a company registered in the UK. Their website is currently unavailable.

• S Sputnik Tv Ltd London · Security systems · 1-9 employees

  Sputnik TV Ltd offers comprehensive TV installation, CCTV systems, door entry, and network solutions across London. Specializing in home cinema, custo

• S Square Mile Fire and Security London · Fire protection · 10-49 employees

  Based in the City of London, we design, install and maintain fire and security systems to the highest standards.

• S Stakot Construction Ltd London · Refurbishment · 1-9 employees

  Stakot Construction Ltd is a skilled and active construction team with reliable commitment to its purchaser fulfilment. The company began as a general

• S STANDARD ENERGY LTD London · Solar PV

  Standard Energy LTD provides essential services for electricity, renewable energy, communications, and smart solutions, aiming for comfort and efficie

• S Star Installations (UK) Ltd London · Security systems · 1-9 employees

  Professional Satellite, Television, Aerial and Receivers installation company. Established in 2007, offering bespoke services for residential, commerc

• S Steel Work Southern London · Steel fabrication · 1-9 employees

  Steel Work Southern Ltd offers metal fabrication, bespoke CNC work, and access gates across the South of England, including London, Portsmouth, and So

• S Sterling Integrated Services Ltd London · Refurbishment

  Sterling Integrated Services offers expert contract residential cleaning and facilities management for commercial buildings. With over 15 years of exp

• S Strabag UK Ltd London · Civil engineering · 250+ employees

  STRABAG UK, part of STRABAG SE, offers comprehensive construction services across water, energy, transport, and building sectors, integrating innovati

• S Strong Services Ltd London · Electrical · 1-9 employees

  Strong Services Limited offers electrical installation, security systems, and structured IT infrastructure solutions. They focus on smart, lean, and a

• S STRUCTURED WIRING LTD London · Electrical

  Domestic electricians in New Cross, NAPIT-registered, offering 16+ years' experience in repairs, fault finding, installations, upgrades, and lighting.

• S Sureserve Compliance Electrical North Ltd London · Electrical · 50-249 employees

  Sureserve Compliance Electrical North Ltd is a electrical company based in London, registered at Companies House in 2015.

• S Sureserve Compliance Fire Ltd London · Fit-out & interiors · 50-249 employees

  Sureserve Compliance Fire Ltd is a fit-out & interiors company based in London, registered at Companies House in 1990.

• S Switchd London · Utilities · 10-49 employees

  Switchd is an impartial service that searches the energy market daily, automatically switching you to the best energy deals to save you money.

• S Switched On London Ltd London · Electrical · 10-49 employees

  SWITCHED ON LONDON LTD is a company based in London, England. Their website is currently unavailable.

• S Synergy Builders Ltd London · Property developer

  Synergy Builders Ltd is a property developer company based in London, registered at Companies House in 2025.