The 10 Best Security & Alarm Installers in Cardiff 2026

Ranked by real customer reviews, listing activity and Companies House registration, from public sources.

How this ranking is calculated

Composite score from public signals:

  • Google Business Profile star rating (when 3+ reviews)
  • Google Business Profile review count (log-scaled)
  • How many public profile links the listing carries: Companies House number, Google Business Profile, other directory profiles the business has supplied, its own website
  • Whether the listing has been claimed by its owner

No business can pay to be listed, and no reviews are fabricated. Placement is influenced by an optional paid Premium subscription, which puts a business ahead of equally-scored rivals here. Premium businesses carry a Premium badge on their own profile page and in our directory listings, but this list does not mark them.

  1. Easy Security Systems Ltd is a security installer in Cardiff, rated 5/5 from 36 Google reviews. Registered with Companies House (no. 08883768) and currently active. Verified Google Business Profile.

    5.0★ (36 reviews)3 public profile links
    5.0★
    36 Google reviews

  2. Protec Security Systems is a security installer in Cardiff, rated 5/5 from 28 Google reviews. Verified Google Business Profile.

    5.0★ (28 reviews)3 public profile links
    5.0★
    28 Google reviews

  3. STS Alarms is a security installer in Cardiff, rated 5/5 from 21 Google reviews. Registered with Companies House (no. 16611495) and currently active. Verified Google Business Profile.

    5.0★ (21 reviews)3 public profile links
    5.0★
    21 Google reviews

  4. KIRA Fire & Security Systems is a security installer in Cardiff, rated 5/5 from 4 Google reviews. Registered with Companies House (no. 08494079) and currently active.

    5.0★ (4 reviews)Companies House registered
    5.0★
    4 Google reviews

  5. IDS Security Systems Ltd is a security installer in Cardiff, rated 4.6/5 from 10 Google reviews. Verified Google Business Profile.

    4.6★ (10 reviews)
    4.6★
    10 Google reviews

  6. RDM Fire & Security Systems Ltd is a security installer in Cardiff, rated 5/5 from 2 Google reviews. Registered with Companies House (no. 15155852) and currently active.

    3 public profile links

  7. Eclipse Security Systems is a security installer in Cardiff, rated 5/5 from 1 Google review. Registered with Companies House (no. 04568443) and currently active.

    3 public profile links

  8. Western Security Systems Limited is a security installer in Cardiff, rated 5/5 from 1 Google review. Registered with Companies House (no. 02603708) and currently active.

    3 public profile links
  9. Companies House registered
  10. Companies House registered

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