Ferranti

Ferranti International PLC

Company type	Public limited company
Industry	Electrical engineering, defense electronics, computing
Founded	1885
Founder	Sebastian Ziani de Ferranti, Francis Ince, Charles Sparks
Defunct	1993
Fate	Insolvency; divisions absorbed by other companies
Headquarters	Edinburgh , United Kingdom
Area served	Worldwide (including Australia, Canada, Singapore, Germany, United States)
Products	Power grid infrastructure equipment, defense electronics (cockpit displays, radar transmitters, inertial navigation systems, avionics), computers
Number of employees	~8,000 (at peak in defense electronics division)

Ferranti International PLC, commonly known as Ferranti, was a British electrical engineering company active from 1885 until its insolvency in 1993. At its height, Ferranti was a significant force in power grid infrastructure, defense electronics, and computing, and it was once included in the FTSE 100 Index.

The firm held a prominent role in the defense industry, manufacturing sophisticated cockpit displays, radar transmitters, inertial navigation systems, and avionics for military aircraft such as the Tornado fighter jet. Ferranti was also a pioneer in computer development, introducing the Ferranti Mark 1 in 1951, which ranked among the earliest commercially produced computers.

Ferranti maintained an international presence with manufacturing plants and offices across Australia, Canada, Singapore, Germany, and the United States. Its main operations were centered in Edinburgh, where several branch factories and an aviation production facility were located.

Despite Ferranti’s eventual collapse, elements of its heritage persist. The Belgian branch continues to operate as Ferranti Computer Systems, part of Nijkerk Holding since 1994. Various divisions were absorbed by leading corporations such as BAE Systems, Leonardo (formerly Finmeccanica), Ultra Electronics, Thales, and Elbit Systems, with some maintaining operations under different names.

Beyond its industrial contributions, Ferranti left a cultural imprint through organizations like the Ferranti Edinburgh Recreation Club, Mountaineering Club, and Ten-Pin Bowling League. The football club Ferranti Thistle F.C., established in 1943, eventually became Livingston F.C., which competes in the Scottish Professional Football League.

Origins

Sebastian Ziani de Ferranti launched his initial enterprise, Ferranti, Thompson and Ince, in 1882. The firm developed the Ferranti-Thompson Alternator and quickly specialized in alternating current power distribution, becoming a UK leader in this field. In 1885, Dr. Ferranti founded S.Z. de Ferranti alongside partners Francis Ince and Charles Sparks. The advancement of electrical meters was central to the company’s expansion over many years.

Although an advocate for alternating current technology, Ferranti supplied meters for both AC and DC systems to electric utilities and power distributors. In 1887, London Electric Supply Corporation contracted Ferranti to design Deptford Power Station, which opened in 1890 as the first modern facility delivering high-voltage AC at 10,000 volts.

Following this achievement, Ferranti broadened its scope into electrical equipment manufacturing with a focus on transformers. Due to escalating land costs in London, the company moved its operations to Hollinwood, Oldham in 1896. In July 1901, Ferranti Limited was established to acquire S.Z. de Ferranti Ltd’s assets and to raise capital; however, it struggled to attract investors because of tight family control. Overoptimistic market conditions combined with declining profits resulted in receivership by 1903.

A restructuring took place in 1905 that reduced Dr. Ferranti’s ownership stake to below 10%. For the subsequent eleven years, the company was managed by receivers while Dr. Ferranti concentrated on collaborations with J.P. Coats regarding cotton machinery and with Vickers on turbine innovations.

Expansion

At the dawn of the 20th century, electrical power was provided by numerous small firms catering to local industries, each employing distinct standards that impeded the efficient large-scale production of household electrical appliances. Although Dr. Ferranti highlighted this challenge at the IEE in 1910, it was not until 1926 that the National Grid commenced operations.

In 1912, under the leadership of Managing Director A.B. Anderson, Ferranti launched Ferranti Electric in Canada to penetrate the international meter market. Tragically, Anderson perished in the 1914 Empress of Ireland disaster, and with World War I erupting, Dr. Ferranti took a more direct role in company affairs. By 1915, he convinced the board to shift into manufacturing artillery shells and fuzes, which strengthened Ferranti’s financial standing after the war.

High voltage power transformers became a vital product line; some units weighed in excess of one hundred tons. Vincent Ferranti, Dr. Ferranti’s son, joined as transformer manager in 1921 and succeeded his father as chairman and CEO following his death in 1930. In 1935, Ferranti acquired a former wire drawing facility at Moston to manufacture consumer electronics such as televisions, radios, and electric clocks. The company divested its radio and television operations to EKCO in 1957 and ceased clock production by 1960. At Moston, Ferranti Instruments developed precision measurement equipment, including early models of cone and plate viscometers. During the mid-1950s, amid rising demand for power distribution equipment, Ferranti expanded transformer manufacturing with a new plant at Hollinwood.

By 1974, despite its prominence as a defence contractor, Ferranti’s power transformer division suffered losses that strained the company financially. The National Enterprise Board stepped in by acquiring a 65% stake to stabilize the business. After restructuring efforts, Ferranti regained profitability and returned to private ownership by 1980.

Defence electronics

Throughout World War II, Ferranti emerged as a critical supplier of electronics components such as fuzes and vacuum tubes, contributing significantly to early UK radar advancements through its work on Identification Friend or Foe (IFF) systems. After the war, this division expanded substantially, providing radar units, avionics systems, and military electronics worldwide.

In 1943, Ferranti established a manufacturing facility at Crewe Toll in Edinburgh dedicated to producing gyro gunsights for the Supermarine Spitfire. Following the war’s end, Ferranti Research was formed and grew to employ around 8,000 people across eight sites, becoming a central pillar of Scotland’s electronics sector and a major profit center for the company. Later developments included pioneering solid-state ring laser gyroscopes.

Starting in 1949, Ferranti-Packard collaborated with the Royal Canadian Navy on DATAR (Digital Automated Tracking and Resolving), an early computerized battlefield system integrating radar and sonar data for coordinated military operations.

During the 1950s, Ferranti concentrated on airborne radar systems, supplying most of Britain’s fast jets and helicopters. The Crewe Toll site (now part of Leonardo S.p.A.) remains integral as lead partner in the consortium delivering the Euroradar CAPTOR radar system for the Eurofighter Typhoon.

In the 1960s and 1970s, inertial navigation systems became a core product offering serving fast jets such as Harrier, Phantom, and Tornado aircraft; space missions including ESA's Ariane launches; and terrestrial applications. These electromechanical devices were manufactured at Silverknowes in Edinburgh. The British Army employed the PADS system for vehicle-mounted navigation tasks.

Following the invention of the laser during the 1960s, Ferranti made significant strides in electro-optical technologies. By the early 1970s, it was supplying Laser Rangefinder and Marked Target Seeker (LRMTS) systems for Jaguar and Harrier aircraft—later extended to Tornado jets—and delivered the world’s first man-portable laser rangefinder/designator to British ground forces in 1974. The company also established Ferranti Electro-optics Inc in California. Its TIALD Pod has been continuously deployed on Tornado aircraft since its introduction during the first Gulf War.

From the 1960s through to the late 1980s, radar development for the Bristol Ferranti Bloodhound surface-to-air missile represented a major revenue stream. In 1970, Ferranti entered sonar technology via partnership with Plessey, designing computer subsystems for new sonar systems before delivering complete Sonar 2050 installations. This effort eventually evolved into Ferranti Thomson Sonar Systems through further acquisitions.

The selection of radar for the Eurofighter Typhoon during the early 1990s generated controversy: while Britain, Italy, and Spain supported a Ferranti-led ECR-90 system, Germany favored MSD2000 developed by Hughes/AEG/GEC. UK Defence Secretary Tom King guaranteed government backing and authorized GEC to acquire Ferranti Defence Systems from its financially troubled parent company. Hughes subsequently filed suit against GEC alleging improper use of technology but ultimately settled with $23 million awarded; courts acknowledged that MSD-2000 had strong market potential absent GEC’s intervention.

Industrial electronics

Starting in 1956, the company introduced optical position measurement devices for machine tools, utilizing moiré patterns generated by diffraction gratings. By the end of the 1980s, Ferranti's civilian business segments encompassed microwave communication systems (Ferranti Communications) and fuel dispensing equipment (Ferranti Autocourt), both operations based in Dalkeith, Scotland.

Computers

During the late 1940s, Ferranti partnered with academic research teams to advance computer technology. Their inaugural model, the Ferranti Mark 1, was completed in 1951, with approximately nine units delivered by 1957. The Pegasus, launched in 1956, became their most successful vacuum tube computer, with 38 units sold. Around this time, Ivan Idelson at Ferranti created the Cluff–Foster–Idelson coding for 7-track paper tape, which later influenced the development of ASCII.

Collaborating with the Victoria University of Manchester, Ferranti enhanced the Mark 1 by substituting valve diodes with solid-state components, significantly boosting speed and reliability. Marketed from 1957 as the Mercury, nineteen machines were manufactured. Although smaller in scale within Ferranti’s portfolio, the computer division maintained a high profile and operated from a former steam locomotive factory located in West Gorton.

Subsequent to Mercury, Ferranti contributed to the development of the Atlas, a second-generation supercomputer created jointly with Manchester University and Plessey. Operational from December 1962, six units were produced. A simplified version known as the Titan served Cambridge University for nearly eight years. Notably, Atlas was the first global computer to implement virtual memory.

By the early 1960s, delays hindered Ferranti’s mid-range models’ market competitiveness. Meanwhile, their Canadian subsidiary, Ferranti-Packard, rapidly developed the Ferranti-Packard 6000. Seeking to exit commercial computing, Ferranti merged its computer division into International Computers and Tabulators (ICT) in 1963; by 1968 this became ICL’s Large Systems Division. ICT adopted the FP 6000 design as the foundation for its successful ICT 1900 series throughout the 1970s.

The arrangement with ICT prevented Ferranti from continuing in commercial computing but permitted ongoing activity in industrial computing sectors. Innovations originating from the FP 6000 influenced Ferranti’s Ferranti Argus industrial computers developed at Wythenshawe. Initially intended for military applications, the Argus line expanded into broader industrial markets.

At Bracknell, Ferranti’s Digital Systems Division focused on mainframe computers tailored for naval use. Early transistor-based systems included Hermes and Poseidon, followed by the mid-1960s F1600. These computers remained operational aboard naval vessels for many years. The FM1600B, Ferranti’s first model using integrated circuits, served both naval and commercial clients; its more compact single-rack variant was the FM1600D, which was also adapted for airborne deployment on RAF Nimrod aircraft. The FM1600E updated this series and culminated in the F2420, offering a 60% increase in memory capacity and a processing speed 3.5 times faster; it was still active at sea as of 2010.

Semiconductor Division

Ferranti emerged as one of the pioneering European manufacturers of electronic components, including radio valves, cathode-ray tubes, and germanium-based semiconductors. In 1955, it became the first European firm to produce a silicon diode. By 1972, Ferranti introduced the ZN414, a compact single-chip AM radio integrated circuit housed in a three-pin package.

The company's semiconductor branch, Ferranti Semiconductor Ltd., specialized in silicon bipolar devices and notably created the Ferranti F100-L in 1977—an early 16-bit microprocessor featuring 16-bit addressing capabilities. This processor was utilized in the amateur radio satellite UoSAT-1 (also known as OSCAR 9). The ZTX line of bipolar transistors developed by Ferranti eventually led to the establishment of Zetex Semiconductors plc, which took over Ferranti’s discrete semiconductor operations.

During the early 1980s, Ferranti manufactured some of the first large-scale uncommitted logic arrays (ULAs), which were incorporated into home computers such as the Sinclair ZX81, ZX Spectrum, Acorn Electron, and BBC Micro. In 1988, the microelectronics division was divested to Plessey.

Acquisition of International Signal and Control

In 1987, Ferranti acquired International Signal and Control (ISC), a Pennsylvania-based US defense contractor. Following this acquisition, the company was renamed Ferranti International PLC and reorganized into several divisions: Ferranti Computer Systems, Defence Systems, Dynamics, Satcomms, Telecoms, Technologies, and ISC.

Downfall

ISC’s core business involved illicit arms transactions connected to covert US agencies. Although appearing profitable through legitimate sales, these earnings were deceptive. After Ferranti's takeover, the illegal activities were immediately halted, triggering significant cash flow difficulties.

In 1989, the UK Serious Fraud Office initiated a criminal investigation into fraud at ISC. By December 1991, ISC’s founder James Guerin admitted guilt in Philadelphia for fraudulent activities spanning both US and UK operations. The US legal proceedings prevented further prosecution in the UK.

These financial and legal challenges culminated in Ferranti’s insolvency declaration in December 1993.

Operations

Ferranti maintained manufacturing facilities throughout Greater Manchester at locations including Hollinwood, Moston, Chadderton (Gem Mill), Waterhead (Cairo Mill), Derker, Wythenshawe, Cheadle Heath, West Gorton, and Poynton. The company expanded its footprint with branch plants in Edinburgh (covering Silverknowes, Crewe Toll, Gyle, Granton, Robertson Avenue plus a hangar at Turnhouse Airport), Dalkeith, Aberdeen, Dundee, Kinbuck near Dunblane, Bracknell, Barrow-in-Furness, Cwmbran; as well as international sites in Germany and the United States—including Ferranti International Controls Corporation located in Sugar Land, Texas—and Commonwealth nations such as Canada, Australia, and Singapore.

Ferranti Australia operated from Revesby in Sydney, New South Wales with an additional defense-oriented office situated in South Australia.

The Defence Systems division produced an array of cockpit instrumentation including moving map displays as well as head-down and head-up displays; video cameras and recorders; gunsight cameras; motion sensors; night vision goggles; integrated helmets; and pilot stick controls. For the Tornado aircraft program specifically, Ferranti supplied radar transmitters, inertial navigation units, LRMTS systems, TIALD targeting pods, mission recording devices, and various cockpit display units.

Current status of former Ferranti divisions

• Ferranti Autocourt: Purchased by Wayne Dresser and subsequently renamed Wayne Autocourt; the Autocourt designation was eventually discontinued.
• Ferranti Communications: Taken over by Thorn EMI and rebranded as Thorn Communications and Telecontrol Systems (CATS). Later acquired by Tyco International and renamed Tyco Communications. As of August 2019, operations continue under TS Technology Services.
• Ferranti Computer Systems: The Belgian branch remains active as Ferranti Computer System under Nijkerk Holding since 1994. Other segments were acquired by SYSECA (the IT division of Thomson-CSF) and renamed Ferranti-SYSECA Ltd., which later transitioned to Thales Information Systems following Thomson's transformation into Thales Group. The airport systems unit was purchased by Datel around 1995, operating as Ferranti Airport Systems until its acquisition by Ultra Electronics. Additional components were absorbed by GEC-Marconi; after the merger of its defence businesses into the Alenia Marconi Systems joint venture with BAE/Finmeccanica—which has since dissolved—these operations are now incorporated within BAE Systems Integrated System Technologies (Insyte).
• Ferranti Defence Systems: Acquired from administration by GEC-Marconi and renamed GEC Ferranti; subsequently integrated into GEC Marconi Avionics (GMAv). In 2000, BAE Systems took over, forming BAE Systems Avionics. Portions were sold to Finmeccanica in 2007, rebranded as SELEX Galileo, then Selex ES; currently part of Leonardo. Design facilities were situated at Silverknowes, Robertson Avenue, South Gyle 1 & 2, Crewe Toll, and Granton. Following the creation of BAE, South Gyle manufacturing sites were divested with layoffs despite ongoing advanced avionics projects.
• Ferranti Dynamics: Purchased by GEC-Marconi in 1992.
• Ferranti Electronics (Ceramic Seals division): Acquired by Ceramic Seals Limited in 1990.
• Ferranti Instrumentation: Disbanded; certain assets transferred to GEC-Marconi and Ravenfield Designs.
• Ferranti Tapchangers Ltd: Became an independent entity before being acquired by UK grid control specialist Fundamentals Ltd in 2017.
• Ferranti Satcomms: Bought out of administration by Matra Marconi Space in 1994.
• Ferranti Technologies: Underwent a management buyout focusing on avionics, defence electronics, and power systems. Acquired by Elbit Systems in 2007; following activist interventions targeting their Oldham facility, it was sold to TT Electronics in January 2022 with a planned relocation to Rochdale by late 2023.
• Ferranti Air Systems: Purchased by Datel then spun off as a standalone company; later acquired by Ultra Electronics and subsequently bought by ADB Safegate in 2019.
• Ferranti Thomson Sonar Systems: Jointly owned with GEC-Marconi; now fully owned by Thales and renamed Thales Underwater Systems.
• Ferranti Helicopters: Acquired by British Caledonian Airways in April 1979 and renamed British Caledonian Helicopters; later purchased by Bristow Helicopters in 1987.
• Ferranti Subsea Systems: Underwent a management buyout in the early 1990s and was renamed FSSL; Kværner increased its stake in 1994, becoming Kværner FSSL; Kværner has since evolved into Aker Solutions.
• Ferranti Computer Systems Service Department: Taken over by ServiceTec; regional centres were rebranded as ServiceTec with existing personnel retained. The repair facility at Cairo Mill became a separate entity within ServiceTec.
• Ferranti Semiconductors: Transitioned to Zetex Semiconductors following a management buyout in 1989; acquired by Diodes Inc in 2008.
• Ferranti Photonics Ltd.: Operated independently until liquidation due to bankruptcy in 2005.

Other applications of the Ferranti brand

Various organizations still carry the Ferranti name today. In Edinburgh, groups such as the Ferranti Edinburgh Recreation Club (FERC), the Ferranti Mountaineering Club, and the Ferranti Ten-pin Bowling League continue their activities, although they are no longer officially connected to the original companies that once operated in the area.

Established in 1943, Ferranti Thistle F.C. became a member of the Scottish Football League in 1974. Due to sponsorship rules, the club later rebranded as Meadowbank Thistle F.C., and eventually adopted the name Livingston F.C..

Denis Ferranti Meters Limited, which as of 2021 is owned by a direct heir of Sebastian de Ferranti, functions independently from the larger Ferranti corporation. This firm employs more than 200 staff members and produces BT public telephones, industrial vehicle oil pumps, electric motors for mobility devices, electronic components, and certain small-scale equipment for the Ministry of Defence.