Grace's Guide To British Industrial History

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Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,713 pages of information and 247,105 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

ADT Group: Difference between revisions

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of Sunbury on Thames
of Sunbury on Thames, subsidiary of a Bermuda-registered company.


1989 [[British Car Auctions]] changed its name to '''ADT Auctions'''<ref>The Times  Mar. 11, 1989</ref>
1990 Formation of [[ADT Group]] Ltd


1989 Previous name: [[Hawley Group]]; the company owned 20 percent of [[Nu-Swift]], fire extinguisher maker and office cleaning contractor<ref>The Times May 17, 1989</ref>
1996 [[Tyco International]] bought '''Thorn Security''' for £138million<ref>The Times  Feb. 14, 1997</ref>
 
1997 [[Tyco International]] acquired ADT<ref>The Times Mar. 18, 1997</ref>. The Thorn Security business was absorbed into [[ADT]] and all but a handful of the famous red 'THORN' bellboxes replaced. However, the Fire products especially are still to be found in many premises and until recently spares and complete systems of Thorn heritage continued to be manufactured by ADT.


1989 ADT Ltd sold the last of its property service companies, to allow it to concentrate on electronic security systems and car auctions<ref>The Times  July 12, 1989</ref>


1990 Formation of [[ADT Group]] Ltd





Revision as of 16:37, 11 July 2022

of Sunbury on Thames, subsidiary of a Bermuda-registered company.

1990 Formation of ADT Group Ltd

1996 Tyco International bought Thorn Security for £138million[1]

1997 Tyco International acquired ADT[2]. The Thorn Security business was absorbed into ADT and all but a handful of the famous red 'THORN' bellboxes replaced. However, the Fire products especially are still to be found in many premises and until recently spares and complete systems of Thorn heritage continued to be manufactured by ADT.



See Also

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Sources of Information

  1. The Times Feb. 14, 1997
  2. The Times Mar. 18, 1997