The 10 Best Security & Alarm Installers in Cardiff 2026

Ranked by real customer reviews, listing activity and Companies House verification. Updated weekly from public sources.

How this ranking is calculated

Composite score from real, publicly-verifiable signals only:

  • Google Business Profile star rating (when 3+ reviews)
  • Google Business Profile review count (log-scaled)
  • Verification sources: Companies House number, Google Business listing, Checkatrade, TrustATrader, claimed website
  • Operator-claimed listing status

No paid placement. No accepted listings. No fabricated reviews. Source data refreshed weekly.

  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 verification sources
    5.0★
    36 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 verification sources
    5.0★
    28 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 verification sources
    5.0★
    21 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 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 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 verification sources

  7. 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 verification sources

  8. 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 verification sources
  9. Companies House registered
  10. Companies House registered

Want more options? See all security & alarm installers in Cardiff →