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Private company

Siebe plc

Logo: The Siebe plc website, Non-free logo, via Wikipedia3

British engineering corporation

Siebe plc became the name of the new conglomerate formed when Siebe Gorman began taking over other firms in the early 1970s, to distinguish it from Siebe Gorman's original breathing apparatus and diving gear core business. Siebe plc was once one of the United Kingdom's largest engineering businesses and was a constituent of the FTSE 100 Index. In 1999 it merged with BTR plc to form Invensys.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1819Founded1
  • Industryengineering1
  • HeadquartersLondon1
  • Legal formpublic company1

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Siebe plc became the name of the new conglomerate formed when Siebe Gorman began taking over other firms in the early 1970s, to distinguish it from Siebe Gorman's original breathing apparatus and diving gear core business. Siebe plc was once one of the United Kingdom's largest engineering businesses and was a constituent of the FTSE 100 Index. In 1999 it merged with BTR plc to form Invensys.2

The story

About 1972: Siebe plc became the name of the new conglomerate formed when Siebe Gorman began taking over other firms, to distinguish it from Siebe Gorman's original breathing apparatus and diving gear core business.

1972: Siebe plc acquired James North & Sons, a large safety products business, and continued to brand it as North Safety Products.

1985: Siebe plc acquires CompAir, a business making compressed air equipment for the mining and construction industries, divers and firefighters.

1987: Siebe plc acquires the Barber-Colman Company, an industrial automation and controls business.

1990: Siebe plc acquires the Foxboro Company, another industrial automation business.

1994: Siebe plc bought Triconex, a safety control business.

1997: Siebe plc acquired APV plc.

1998: Siebe plc acquired Eurotherm, Wonderware and Simulation Sciences.

Read the full text

1998: Siebe plc sold North Safety Products (and Siebe Gorman with it) to Norcross.

1999: Siebe plc acquired Esscor.

1999: Siebe plc merged with BTR plc to form Invensys.

From Wikipedia’s article on Siebe plc, shared under CC BY-SA 4.0.4

Acquisitions

  1. Succeeded by Invensys1

Timeline

  1. 1999Dissolved Dissolved1
  2. 1819Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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