134 reviews
Innert Security is rated 5.0/5 from 134 Google reviews and serves London and the surrounding area. Services include security system installers.
Top 10 Security System Installers in London (2026)
Ranked by Google rating · updated September 2026 · 49 companies listed
Looking for reliable security system installers in London? We've ranked the 49 security system installers listed on Leads FM in London by their Google rating and review count, so the companies below are the ones local customers rate most highly.
Across 1,952 customer reviews the average rating is 4.8/5; the most-reviewed company has 138 reviews. Every profile includes contact details and a free enquiry form.
124 reviews
Prime Fire & Security Systems Ltd is rated 5.0/5 from 124 Google reviews and serves London and the surrounding area. Services include security system installers.
#3
Third Eye Installation Systems - Security Systems for Homes and Businesses
London · N20 9BS · Security System Installers
76 reviews
Third Eye Installation Systems - Security Systems for Homes and Businesses is rated 5.0/5 from 76 Google reviews and serves London and the surrounding area. Services include security system installers.
75 reviews
Armour Security Ltd is rated 5.0/5 from 75 Google reviews and serves London and the surrounding area. Services include security system installers.
#5
Astoria | Fire Alarm Installation & Maintenance London
London · EC1R 0AT · Security System Installers
62 reviews
Astoria | Fire Alarm Installation & Maintenance London is rated 5.0/5 from 62 Google reviews and serves London and the surrounding area. Services include security system installers.
56 reviews
Sight Force Fire & Security is rated 5.0/5 from 56 Google reviews and serves London and the surrounding area. Services include security system installers.
26 reviews
Security Red Alert (Fire and Security) is rated 5.0/5 from 26 Google reviews and serves London and the surrounding area. Services include security system installers.
25 reviews
Eagle All Security is rated 5.0/5 from 25 Google reviews and serves London and the surrounding area. Services include security system installers.
25 reviews
London Watchful Security LTD is rated 5.0/5 from 25 Google reviews and serves London and the surrounding area. Services include security system installers.
23 reviews
DRAM Fire & Security is rated 5.0/5 from 23 Google reviews and serves London and the surrounding area. Services include security system installers.
Frequently asked questions
How are the Security System Installers in London ranked?
Companies are ordered by their Google rating and number of reviews. Featured listings are shown first and clearly labelled; otherwise ranking cannot be bought.
How many Security System Installers are listed in London?
Leads FM currently lists 49 Security System Installers in London, with an average Google rating of 4.8 across 1,952 reviews.
How do I get a quote?
Open any company profile and use the enquiry form — your request goes straight to the company, free of charge and with no obligation.
Is my company missing from this list?
Add it free at leadsfm.com/list-your-business, or claim your existing listing to update details and appear with a Verified badge.
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