September 2026

Top 5 passive fire protection companies in the United Kingdom

Of the 106 passive fire protection companies in the United Kingdom listed in the OpenFire directory in September 2026, these profiles were viewed most by people and AI assistants.

  1. #1

    123 Fire (a division of MB Plant Limited) logo

    123 Fire (a division of MB Plant Limited)

    LPCB-approved inspector of fire and security doors and shutters, covering their repair and maintenance.

    Installer 21–100 people 1 office
    Fire door inspection & survey Firestopping
    Goole, England View firm
  2. #2

    Promat logo

    Promat

    Fire-protection boards, mortars, firestop systems and fire-resistant glazing.

    Manufacturer 100+ people 2 offices
    Compartment walls & cavity barriers Fire-rated glazing Firestopping +2 more
    Heywood, England · HQ View firm
  3. Joint #3

    Black & White Fire Safety logo

    Black & White Fire Safety

    South East fire safety contractor, third-party certified passive works.

    Contractor 21–100 people Est. 2006 1 office
    Compartment walls & cavity barriers Fire door inspection & survey Firestopping +1 more
    Stevenage, England View firm
  4. Joint #3

    Capital Maintenance logo

    Capital Maintenance

    One of few firms holding LPS 1531, LPS 1271 and LPS 1197 together.

    Contractor 21–100 people 1 office
    Compartment walls & cavity barriers Fire door inspection & survey Fire door installation +1 more
    London, England View firm
  5. Joint #5

    AW

    AFP Wales

    Newport and Swansea fire safety contractor with FIRAS-certified fire door services.

    Contractor 1 office
    Compartment walls & cavity barriers Fire door inspection & survey Fire door installation +2 more
    Pontypridd, Wales View firm
  6. Joint #5

    FSi Promat logo

    FSi Promat

    Fire safety, no compromise.

    Manufacturer 100+ people Est. 2000 1 office
    Compartment walls & cavity barriers Firestopping PFP product manufacture
    Measham View firm

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How the rankings work

Firms are ranked by how often their OpenFire directory profile was viewed during the calendar month, by people and by AI assistants. Search-engine crawlers, other automated traffic and link previews are not counted. Firms with equal views share a rank.

A firm with offices in several countries, or working across several categories, is ranked in each of them on the same monthly total. A ranking is only published where enough firms are listed and viewed for it to be meaningful.

A ranking reflects interest in a firm's listing. It is not an endorsement, and it is not a check of a firm's competence, certification or accreditation.