Security system installers in London

832 security system installers across London.

• 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 Route Electrical Ltd Orpington · Electrical

  Route Electrical Ltd is a NAPIT-certified electrician company in London offering commercial and residential electrical services, including installatio

• R Rs Controls Ltd West Byfleet · Electrical · 1-9 employees

  RS Controls specialises in integrated smart home and building control systems, enhancing comfort, convenience, and energy efficiency for residential a

• 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 J Builders London Ltd West Drayton · Extensions

  SJ Builders London Limited is a family-owned construction company based in West Drayton, specialising in high-quality building projects including home

• S S P Infra Ltd Ruislip · Main contractor

  SP Infra LTD: Redefining construction with precision, innovation, and enduring quality.

• S S. Scott Gas Team Ltd Edgware · Plumbing · 1-9 employees

  Sscottgasteam (SGT) offers plumbing, heating, and electrical services in London. They provide competitive pricing, fixed quotes, and a 10% discount fo

• 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 Sacx Ltd Rickmansworth · Main contractor · 10-49 employees

  Sacx is a construction company offering innovative, high-quality services with a focus on people, quality, and service. They provide turnkey solutions

• S Safe Height Solutions Ltd Kenley · Fire protection · 1-9 employees

  Safe Height Solutions offers specialist rope access services including industrial rope access, firestopping, permanent access systems, rigging, consul

• 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 Sb Electric Solutions Ltd Orpington · Electrical · 1-9 employees

  SB Electric Solutions LTD offers a wide range of commercial and domestic electrical services including EICR/landlord certificates, rewires, installati

• S Scape Lofts Ilford · Loft conversions

  Scape Lofts specialises in transforming underused lofts into extraordinary living environments that blend craftsmanship, innovation, and architectural

• S Scutum UK & Ireland Ltd Chertsey · Security systems · 1-9 employees

  A leader in enterprise security, Scutum supports large companies and SMEs with 24/7 solutions for property, people, infrastructure and data.

• 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 Securitygates4you Ltd Edgware · Security systems · 1-9 employees

  Secure your property with confidence at Security Gates 4 You. Premium made-to-measure security gates for doors, including security gates for front doo

• 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 Series Parallel Ltd Wanstead · Electrical · 1-9 employees

  Series Parallel Ltd is a construction company based in London. The company's website is currently under construction.

• 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 Shelter Tech UK Ltd Uxbridge · Waterproofing · 10-49 employees

  Shelter Tech UK Ltd are specialists in Legionella control, offering risk assessments, water treatment, and disinfection services across the UK.

• 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 Sinera Electrical Services Welling · Electrical · 1-9 employees

  Sinera Electrical Services offers comprehensive electrical repair, installation, maintenance, and testing for residential and commercial clients acros

• 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 Sky Creative For Trading And Contracting Ltd Borehamwood · Electrical

  Expert procurement and supply chain solutions for UK and international government agencies. 20+ years delivering maintenance, IT, facilities, and spec

• S Sky Electrical Middlesex · Electrical · 10-49 employees

  Sky Electrical is a NICEIC approved electrical contractor serving London and Surrey since 1958. They offer a full range of electrical services for res

• S Sky Shopfronts & Signs Ltd Southall · Shopfitting · 1-9 employees

  Sky Shopfronts & Signs Ltd offers expert shopfront fitting, roller shutters, signs, and automatic doors in Southall. We design, manufacture, and insta

• S Sm Tech Ltd Dartford · Solar PV · 1-9 employees

  SM Tech Ltd has been enhancing homes across the UK with expert craftsmanship and personalized service. Transform your space today!

• S SMART AUTO GATE LTD Greenford · Security systems · 1-9 employees

  Smart Auto Gate Ltd offers professional and speedy installation and maintenance of electronic security and surveillance systems, including automatic g

• 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 Green Construction Ltd Ilford · Main contractor · 1-9 employees

  Smart Green Construction Ltd is a main contractor company based in Ilford, registered at Companies House in 2021.

• S SMART HOME BUILDERS LTD Feltham · Security systems · 1-9 employees

  SMART HOME BUILDERS LTD offers intelligent home solutions for individuals over 45 in Germany, focusing on health monitoring, security, and convenience

• 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 Plug Ltd Edgware · Electrical · 1-9 employees

  Smart Plug Ltd offers electrical installations, smart home solutions, audio visual consulting, and home building services. We aim to enhance quality o

• S Smart Secure Ltd Ilford · Security systems · 1-9 employees

  Smart Secure Ltd provides professional security and automotive solutions, including manned guarding, mobile patrols, keyholding, alarm response, and v

• 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 Smarts and Sparks Ruislip · Security systems

  Smarts and Sparks advises, designs, and installs SmartHome technology and Security Systems. They also undertake domestic electrical work.

• 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 SNC Facilities Management Romford · Electrical · 1-9 employees

  SNC Facilities Management provides expert electrical installation and EV charging services for domestic and commercial clients across London and Essex

• 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