IMI plc

IMI plc is a British industrial engineering group headquartered in Birmingham, England. Its modern business is centered on the design and manufacture of technologies that control the movement, pressure, temperature and distribution of fluids and gases. The company serves industrial and commercial customers through activities spanning process automation, industrial automation, climate control, life-science and fluid-control applications, and transport systems. The company traces its origins to 1862, when Scottish entrepreneur George Kynoch established a percussion-cap factory at Witton in the West Midlands. The original Kynoch business expanded into a diverse manufacturing enterprise, producing items that included soap, bicycle components, ammunition-related products and non-ferrous metals. Over time, metallurgy became one of its principal areas of expertise. After the First World War, Kynoch merged with Nobel Industries, and the combined business later became part of Nobel Explosives. In 1927, Nobel Explosives was one of four businesses combined to form Imperial Chemical Industries, or ICI. The Witton works subsequently became the headquarters of ICI Metals. During the Second World War, the site participated in the development and production of uranium for the Tube Alloys project. In the post-war period, the company's technical capabilities broadened further. Researchers associated with the business developed a commercially viable process for producing titanium during the 1950s, helping establish a stronger position in advanced metals and materials. ICI Metals also expanded through its ownership of Yorkshire Imperial Metals, acquiring an initial half share in 1958 and the remainder in 1962. The name Imperial Metal Industries Limited was adopted in 1962, one hundred years after the founding of the original Kynoch enterprise. IMI was floated on the London Stock Exchange in 1966. ICI initially retained majority ownership, but IMI became fully independent in 1978. During the 1990s, the group began withdrawing from more basic and less differentiated activities, including metal smelting and metal founding, and increasingly concentrated on higher-value engineered products. In 2003, IMI moved from its historic Witton site to new headquarters near Birmingham Airport. A further strategic transformation was completed during the 2000s and early 2010s. In 2013, the company announced the disposal of two non-core businesses to Berkshire Hathaway for £690 million. The transactions included Cornelius Group, a beverage-dispensing equipment business, and a marketing-intelligence business. The disposals were intended to sharpen the group’s focus on control valves and related engineered flow-control technologies. IMI has continued to develop through a combination of organic specialization and acquisitions. In 2022, it agreed to acquire Heatmiser, a Blackburn-based manufacturer of smart thermostatic controls, for £110 million. The transaction strengthened IMI’s climate-control capabilities and connected its traditional expertise in engineered control systems with digital and smart-building applications. Today, IMI presents itself as a focused engineering group rather than a diversified metals producer. Its products are generally business-to-business components or systems embedded in larger industrial, energy, building, healthcare, transport and manufacturing installations. The brand’s positioning rests on technical reliability, precision control, application engineering and the ability to operate in demanding environments. Although its historical roots are in metals and industrial manufacturing, the current portfolio is primarily associated with valves, actuators, regulators, thermostatic controls and other fluid- and process-management technologies.

IMI's history begins with George Kynoch's 1862 percussion-cap factory at Witton in the West Midlands. The business diversified during the nineteenth century, entering areas such as soap, bicycle components and non-ferrous metals. By the early twentieth century, metallurgy had become a defining capability. The enterprise also maintained connections with ammunition and explosives manufacturing, including through the acquisition of Eley Brothers in 1926. Following the First World War, Kynoch merged with Nobel Industries. The resulting business became associated with Nobel Explosives, which in 1927 joined three other major businesses to form Imperial Chemical Industries. The Witton operation became the headquarters of ICI Metals. Its wartime activities included work connected with uranium development and production for the Tube Alloys project. Post-war research broadened the technical base of the business. During the 1950s, researchers perfected a commercially usable process for producing titanium. ICI Metals also expanded its ownership of Yorkshire Imperial Metals, taking a 50 percent stake in 1958 and purchasing the remaining interest four years later. The name Imperial Metal Industries Limited was adopted in 1962, marking the centenary of the original Kynoch business. IMI became a publicly traded company on the London Stock Exchange in 1966, although ICI initially retained majority control. Full independence followed in 1978. The company later used the name IMI Limited before becoming known as IMI plc. During the 1990s, IMI reduced its exposure to basic metals activities, including metal smelting and metal founding. This represented a shift away from commodity-oriented operations and toward specialized engineered products. In 2003, the company left its historic Witton headquarters for a new site near Birmingham Airport. The strategic refocusing continued into the 2010s. In 2013, IMI sold Cornelius Group, which made beverage-dispensing machines, and a marketing-intelligence business to Berkshire Hathaway. The combined disposals were valued at £690 million and were described as the completion of a decade-long transformation designed to make control valves and associated engineering technologies the core of the group. In 2022, IMI expanded its climate-control activities through the announced acquisition of Heatmiser for £110 million. Heatmiser's smart thermostatic controls complemented IMI's established capabilities in engineered regulation and building-related control systems. The contemporary IMI group is organized around five principal areas: process automation, industrial automation, climate control, life science and fluid control, and transport. Its products are primarily engineered systems and components used by industrial, infrastructure, building-services, healthcare and transport customers. The historical progression from Kynoch's metals and explosives-related manufacturing to modern fluid control illustrates the company's transition from a broad industrial conglomerate into a more specialized engineering group.

1. 2022Heatmiser acquisition announced

   IMI announces the acquisition of smart thermostatic-control manufacturer Heatmiser for £110 million.

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2. 2013Sale of non-core subsidiaries to Berkshire Hathaway

   IMI completes disposals of Cornelius Group and a marketing-intelligence business for £690 million, reinforcing its focus on control valves.

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3. 2003Headquarters move from Witton

   IMI relocates its headquarters from the historic Witton site to new premises near Birmingham Airport.

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4. 1978IMI becomes independent from ICI

   IMI separates fully from Imperial Chemical Industries and begins operating as an independent company.

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5. 1966IMI is listed on the London Stock Exchange

   IMI becomes a publicly traded company, initially with ICI retaining a majority holding.

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6. 1962Imperial Metal Industries name adopted

   The Imperial Metal Industries Limited name is adopted on the centenary of the original Kynoch business.

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7. 1958Investment in Yorkshire Imperial Metals

   ICI Metals acquires an initial 50 percent interest in Yorkshire Imperial Metals.

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8. 1927Formation of Imperial Chemical Industries

   Nobel Explosives becomes one of four businesses merged to create Imperial Chemical Industries.

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9. 1926Acquisition of Eley Brothers

   The business acquires Eley Brothers, an ammunition company, adding to its explosives and ammunition-related activities.

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10. 1862George Kynoch establishes the Witton manufacturing business

    George Kynoch opens a percussion-cap factory at Witton in the West Midlands, establishing the business from which IMI ultimately developed.

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A focused, engineering-led industrial technology group providing precision fluid-control, automation and climate-control solutions for demanding professional and industrial applications.

• Process automationIndustrial automation and fluid control

  IMI's process-automation activities provide engineered control technologies for industrial processes in which flow, pressure, temperature and other operating conditions must be regulated precisely. The portfolio is associated with control valves, actuators and related equipment used in demanding process environments. These products are typically integrated into larger plants and infrastructure rather than sold directly to consumers.

• Industrial automationAutomation equipment

  The industrial-automation business supplies components and systems used to automate the movement and control of machinery and industrial equipment. Its technologies support accurate, repeatable operation in manufacturing and process applications, with emphasis on engineered reliability and integration into customer systems.

• Climate controlBuilding and climate-control technology

  IMI's climate-control activities address the regulation of heating and related building conditions. The portfolio includes thermostatic and other control technologies intended to improve comfort, system regulation and energy management in buildings and commercial installations. The 2022 Heatmiser acquisition added smart thermostatic-control capabilities to this area.

• Life science and fluid controlLife-science equipment

  This area applies IMI's flow-control and precision-engineering capabilities to life-science and related applications. Products in the category are designed for controlled handling of fluids and gases in environments where cleanliness, repeatability and dependable operation are important.

• TransportTransport engineering

  IMI's transport activities provide engineered control and automation technologies for transport-related applications. The products are intended for integration into professional transport systems and reflect the group's broader focus on precise mechanical and fluid management in demanding operating conditions.

• Smart thermostatic controlsClimate-control equipment2022

  Smart thermostatic controls are associated with Heatmiser, acquired by IMI in 2022. They extend traditional temperature regulation into connected and digitally managed building applications, supporting more responsive control of heating systems.

• 2022Acquisition of HeatmiserM&A

  IMI sought to strengthen its climate-control activities with smart thermostatic technology.

  What changed. IMI agreed to acquire Heatmiser, a Blackburn-based smart thermostatic-control manufacturer, for £110 million.

  Aftermath. The deal expanded IMI's climate-control offering and added a connected-building technology capability.

  Acquisition price. £110 million (2022)

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• 2013Concentration on control valvesStrategy

  IMI described the disposal of two non-core subsidiaries as the completion of a decade-long transformation.

  What changed. The company sold Cornelius Group and a marketing-intelligence business to Berkshire Hathaway for £690 million.

  Aftermath. The disposals narrowed the portfolio and allowed IMI to focus more strongly on control valves and related engineered flow-control activities.

  Transaction value. £690 million (2013)

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• 1990Shift away from basic metals activitiesStrategy

  During the 1990s, IMI was reducing its exposure to less differentiated activities such as metal smelting and metal founding.

  What changed. The company disposed of or exited more basic metals businesses and concentrated progressively on specialized engineered products.

  Aftermath. The change helped establish the strategic direction that ultimately made fluid control and automation the center of IMI's business.

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• 2022IMI agrees to acquire Heatmiser

  IMI agreed to acquire Heatmiser, a Blackburn-based manufacturer of smart thermostatic-control products, for £110 million. The acquisition expanded IMI's climate-control portfolio.

  M&AProduct launch
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• 2013IMI announces completion of a long-term transformation programme

  IMI announced that the disposal of two non-core subsidiaries to Berkshire Hathaway for £690 million had completed. The transactions were presented as a way to concentrate the group on control valves and related engineering activities.

  M&A
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1. IMI plc