ISTEL  ISTEL, formerly "BL Systems", and latterly "AT&T Istel", was a British information technology company. The company was formed in 1979 as BL Systems Limited (BLSL) through a merger of the computer departments of various automotive manufacturing companies brought together under the British Leyland (BL) umbrella. John Leighfield became the chairman of the new company, which, in addition to providing the computer resources and telecommunications services for the BL companies, gradually started to provide similar services for other outside companies. The company's headquarters were established in Redditch and Coventry. "BL Systems" pioneered many services, including the establishment of Europe's first microwave communications network in the late 1970s and launched "Comet" (originally a US product) that in 1981 was Britain's first commercial electronic mail service. In 1984 the company's name was changed to "ISTEL". The new company name was said to have been chosen by Leighfield randomly by combining pairs of syllables that sounded vaguely related to systems, telecommunications, or technology until he hit upon one he liked the sound of. By 1986 it was widely understood among staff to be an acronym for "In Systems The Established Leader", some also noting that "Information Systems and TELecommunications" fitted quite nicely. In addition, the similarity with the name of a microchip manufacturer did not go unnoticed. The more waggish staff were known to say that the acronym stood for "Information Screwed, Twisted and Eventually Lost" or "I Stand To Earn Less". In June 1987, Rover Group (to which "British Leyland" had been renamed in 1986) sold "ISTEL", in a management buyout, to a consortium of its management and employees, and investors, led by John Leighfield, for £35 million. In October 1989, ISTEL was sold to AT&T and was renamed "AT&T Istel". Latterly it was documented that in 1997 AT&T quietly dropped the "Istel" name putting its finance, commerce, travel, and healthcare divisions up for sale. Customers included Citibank, Delta Air Lines, Barclays Bank, Texaco, British Oxygen, Boots and Post Office Ltd. The healthcare division was sold to Atlanta-based company "HBO & Company". In 1998 the company's finance and banking division was sold to Cap Gemini. In April 1998 AT&T sold the Automotive Division, the original core of ISTEL, to BMW's in house software house, Softlab GmbH.