The 7 Best Security & Alarm Installers in Swansea 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. North Shore Security - CCTV & Intruder Alarms is a security installer in Swansea, rated 5/5 from 108 Google reviews. Established Google Business Profile with 108+ customer reviews.

    5.0★ (108 reviews)
    5.0★
    108 reviews

  2. PES Fire & Security Systems is a security installer in Swansea, rated 5/5 from 14 Google reviews. Verified Google Business Profile.

    5.0★ (14 reviews)
    5.0★
    14 reviews

  3. Connections Fire & Security - Intruder Alarms / CCTV - Swansea is a security installer in Swansea, rated 5/5 from 8 Google reviews.

    5.0★ (8 reviews)
    5.0★
    8 reviews

  4. LA Alarms is a security installer in Swansea, rated 4.7/5 from 13 Google reviews. Verified Google Business Profile.

    4.7★ (13 reviews)
    4.7★
    13 reviews

  5. DT Security Systems South Wales is a security installer in Swansea, rated 4.6/5 from 9 Google reviews.

    4.6★ (9 reviews)
    4.6★
    9 reviews
  6. Companies House registered
  7. Companies House registered

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