Written by Mark Reid,
Trades Editor
Rankings are driven primarily by review rating and review count from public business listings, with a small lift given to businesses that show a working website and phone number. We check each business's homepage to confirm alarm and security installation is what they primarily offer, rather than a sideline to another trade. Listings marked permanently closed are removed automatically. Businesses displaying a Trust Verified badge have gone through our full verification, covering qualifications and accreditations, insurance, trading history, and customer review history; see our How We Verify page for details. Other businesses listed here haven't been independently verified by us, and their inclusion isn't an endorsement, so do your own checks before hiring anyone.
| # | Business | Rating | Reviews | Phone | |
|---|---|---|---|---|---|
| 1 | Sach Audio And Visual | ⭐ 5.0 | 186 | 07723 030624 | View → |
| 2 | AYS System | ⭐ 4.9 | 57 | 020 3151 2030 | View → |
| 3 | Avruka Ltd | ⭐ 5.0 | 32 | 0333 772 9858 | View → |
| 4 | Sirius AV | ⭐ 5.0 | 27 | 0330 320 2489 | View → |
| 5 | Amax Fire & Security | ⭐ 4.7 | 28 | 020 8427 2242 | View → |
| 6 | Intraguard Limited | ⭐ 5.0 | 5 | 0333 888 0247 | View → |
| 7 | Security Gates 4 You LTD | ⭐ 5.0 | 5 | 020 8935 5921 | View → |
| 8 | Nuvo Home Services | ⭐ 5.0 | 4 | 020 3872 2345 | View → |
| 9 | Eco Friendly Services Ltd | ⭐ 5.0 | 4 | 07445 354802 | View → |
| 10 | Gortech Security Ltd | ⭐ 5.0 | 3 | 020 3745 9898 | View → |
| 11 | CSQ Systems | – | – | 07956 505016 | View → |
Our Top Picks
Families across Harrow rely on Sach Audio And Visual for alarm and security installations that fit around home layouts and daily routines. The firm has built a following of 186 reviews with a full five-star average, reflecting consistent care in how systems are fitted and explained. Work covers both new installs and upgrades to existing setups.
Read more →CCTV installation, intruder alarms, and access control systems are among the core offerings from AYS System, a security and electrical installer based in Harrow. The company also covers fire alarm systems, data networking, and solar panel installation, making it a broad-remit outfit for residential and commercial premises. A Google rating of 4.9 from 57 reviews points to consistent workmanship across its range.
Read more →A perfect score from 32 reviews sets Avruka Ltd apart among alarm and security installers in Harrow. The company fits and maintains security systems for homes and businesses, with consistent feedback pointing to reliable workmanship rather than one-off praise. Enquiries can be made through the company's website for further detail on coverage and system types.
Read more →Alarm and security installation work in Harrow is handled by Sirius AV, covering CCTV and alarm systems for homes and businesses across the area. The firm has built a record of 27 reviews averaging a full five stars, reflecting consistency in fitting and setting up systems that clients rely on daily.
Read more →Amax Fire & Security installs and monitors fire detection, intruder alarms, CCTV, and access control systems across Harrow and the surrounding area. The company also integrates smart security systems and provides round-the-clock monitoring, covering both fire safety and physical security under one outfit. A Google rating of 4.7 from 28 reviews reflects consistent feedback across its range of work.
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Add Your BusinessA typical enquiry starts with a landlord or facilities manager in Harrow wanting CCTV, access control or intruder alarms fitted across a commercial site without disrupting daily operations. Intraguard Limited handles the survey, installation and system testing as one job, with five reviews on Google all rating the work at five stars.
Read more →Security Gates 4 You LTD installs physical security products across Harrow, covering steel bar grilles, grille doors, retractable sliding gates, side gates, and security locks. The company positions itself squarely within the fabricated metalwork side of security, rather than electronic alarms, and holds a five-star Google rating from its reviewed work. Enquiries can be directed through its dedicated website.
Read more →Nuvo Home Services operates in Harrow as an alarm and security installation company. The business covers residential and commercial security systems, positioning itself as a hands-on local provider rather than a national contractor. Its website outlines a focused range of installation work, reflecting a deliberate scope rather than a broad multi-trade offer.
Read more →Alarm and security installation work in Harrow is handled by Eco Friendly Services Ltd, covering domestic and commercial properties across the area. Work spans the fitting of alarm systems and related security equipment, with jobs organised to suit the property and its layout. Enquiries can be made through the company's website for further details on coverage.
Read more →Families across Harrow rely on Gortech Security Ltd for alarm systems fitted around the way a household actually lives, from entry points to outbuildings. The firm covers installation and setup rather than generic packages, working within the HA3 area. Enquiries can be made through the company website for further details on current systems offered.
Read more →CSQ Systems installs and maintains intruder alarms, CCTV, and access control systems for residential and commercial properties across Harrow. The company serves clients within the WD6 area and surrounding postcodes, keeping its focus on wired and wireless security solutions suited to both new builds and existing premises.
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