Sigma Engineered Solutions Ltd is a provider of fire & security systems such as access control, door entry, CCTV, intruder alarms & fire alarms. The company serves both domestic & commercial markets. Sigma Engineered Solutions Ltd installs and provides maintenance of burglar alarms & monitoring, photo ID system, fire alarm system as well as building management system.

Signal Securities Ltd is a specialist in security alarms, installation and maintenance. The company has been providing security solutions to both domestic and commercial clients for over 20 years. Signal Securities Ltd. services range from security alarms, alarm systems, CCTV security systems, burglar alarms, access control, and fire alarms.

SilverNet is a UK based manufacturing company specialising in the design and manufacture of rugged, high performance cost-effective wireless and switching networking devices since 2005. Over which time SilverNet have gained an enviable reputation in the wireless market.

Simec Security provides access control, CCTV, ID, door entry, alarm and integration services to the commercial sector. The company has over 50 years of experience in the electronic protection of commercial key assets including- personnel, property and data. Simec Security have been awarded SAFEcontractor accreditation through the scheme that assesses health & safety competency of contractors and service providers.

Simpli Security is a UK based online retailer offering a huge range of security products including intruder alarm systems, CCTV cameras, money counters, safes, convex mirrors, traffic mirrors, metal sheds, storage sheds, bike storage, safety mirrors, barriers, car park barriers, bollards, bike racks, crowd/ queue control and much more.

Sitensys can provide you with a full security solution for the surveillance and protection of personnel and property. We offer fully integrated electronic systems and manned guarding solutions. At the heart of Sitensys Security is our on site guarding services.Sitensys specialises in manned guarding utilising fully integrated electronic security solutions, closed circuit television surveillance (CCTV) and access control systems.

Sitewatch are consultants, installers and operators of automated fire and security systems. Services include CCTV, access systems, fire detection, security gates, remote management, biometrics, consultation, supply, installation & maintenance and project management. Whether clients' requirements are for stand-alone or fully integrated systems, Sitewatch can provide a tailored solution to every security requirement.

Six Degrees Group is a cloud-led managed service provider. It works as a collaborative technology partner to businesses making a digital transition. Always placing clients at the heart of its strategy, Six Degrees’ passionate teams combine technical expertise and deep sector-specific knowledge to innovate, craft, and manage the right solutions to power their businesses.

SleepTight Security specialises in installing, fault finding, commissioning and servicing electronic security system, including intruder and burglar alarms, CCTV, electric gates, fire alarm systems, access control.

Smart Access Ltd is part od the Guardian Security Group and is based in Marsh Barton, Exeter Devon. The company is one of the leading companies for the supply and installation of Modern Salto Access Control, CCTV and Car park Barrier technologies across the UK. Smart Access Ltd covers the Entire South of England including, London, Oxford, Basingstoke, Reading, Salisbury, Bournemouth, Southampton, Gosport, Portsmouth, Swindon and Bath.

Smart Integrated Solutions Ltd provide dynamic support and design / installation for Security / Integrated Facilities Solutions, with substantial experience in a variety of vertical markets and sectors. Further services include consultancy and TFM innovation for Facilities Management Companies. These solutions include CCTV, ANPR, Access Control, Security Systems and Integrated software platforms, to provide centralisation to clients of systems

Smarter Technologies tracks, monitors and recovers assets across the globe in real time, providing asset tracking systems to the open market and fulfilling the world’s most complex asset tracking requirements.

SME CCTV provides security solutions for London, Kent, Essex, Middlesex, Buckinghamshire, Hertfordshire, Berkshire, Sussex and Surrey.

Smoothwall develops intelligent student safeguarding and well-being solutions designed to protect users worldwide. Smoothwall offers the only 100% real-time content web filtering solution with anti-malware, deep packet inspection, anonymous proxy detection and more. They also offer intelligent web filtering, monitoring and security solutions designed to protect users worldwide.

Smye-Rumsby is a service-oriented company, offering equipment sales and a full, twenty-four-hour repair maintenance service, providing procurement and maintenance services to users of marine navigational equipment, including shore-based radar and radio communications. They also install, monitor and maintain CCTV systems along with a complete service for PA systems.

Snoop is a technology and software solutions start-up which aims to help customers ‘spend smarter, save smarter, live smarter’. It uses Open Banking, a cloud-native platform and artificial intelligence to analyze users’ transactions and spending patterns, and provide them with hyper-personalized alerts and advice.

So Secure provides high quality home security, selected from the latest technologies for security applications in residential, commercial and industrial premises. Working across Kent, Sussex, Surrey and London, the company specialises in the design, installation and maintenance of effective security systems.

Sonic Security (UK) Ltd have been creating and supplying security systems for over 35 years. The company installs and maintains CCTV systems, security locks and much more. Sonic Security (UK) provides everything from specialist CCTV systems, to security fogging to immobilise intruders.