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Last Updated: 2026
Diploma plc image

Diploma plc

Rank#1576
Market Cap13.76B
CountryUnited Kingdom
Summary
History
Mission
Vision
References
Summaryarrow
Diploma PLC, together with its subsidiaries, supplies specialized technical products and services in the United Kingdom, rest of Europe, North America, and internationally. It operates through three business sectors: Life Sciences, Seals, and Controls. The Life Sciences sector supplies clinical diagnostics instrumentation and products, consumables, specialty surgical devices, and related consumables and services to public hospitals, private clinics, pathology laboratories, scientific research, and medical segments; surgical equipment for hospital operating rooms; and distributes laboratory diagnostics, specialty medical devices, devices, equipment, and patient monitoring technologies used in operating theatres, as well as medically supervised nutrition. It also provides supplies specialist containment solutions and analyzers for chemical, petrochemical, environmental research, and pharmaceutical technology. The Seals sector supplies various seals, gaskets, filters, cylinders, components, and kits used in heavy mobile machinery and specialized industrial equipment; and O-rings, custom molded and machined parts, fluid sealing products, and hydraulic cylinder components. The Controls sector offers cable identification, termination, and management products, and cable products; low voltage cables and cable management solutions; harness components and specialist connectors, including protective sleevings, cut-to-length tubing, kitting, connector assemblies, and prototype quantities of customized multi-core cables; fasteners and related technical support, and other value-added services for civil aerospace, motorsport, defense, and general industries, as well as supports customers with automated inventory replenishment solutions; fluid controllers, compressors, valves, temperature and pressure measurement devices, and liquid dispensing components; and silicones, adhesives, and sealants. Diploma PLC was incorporated in 1931 and is based in London, the United Kingdom.
Historyarrow

The company, which was founded in 1931, was first listed on the London Stock Exchange in 1960, and was a market leader in electronic component distribution, building products and special steels until the late 1980s. The electronic component distribution business was sold in 1999, the building products business was sold in 2000, and the special steels business was sold in 2001.It was announced in August 2018, that CEO Richard Ingram will be stepping down after four months in charge, with John Nicholas acting as executive chairman in interim charge.

Missionarrow
To become the inspiration and global leader in precision-based engineering components, whilst delivering long-term benefits to our customers and partners.
Visionarrow
To develop a powerful portfolio of businesses that provide an excellent combination of innovation, value and quality. To create a lasting partnership between employees, customers and suppliers.
Referencesarrow

https://en.wikipedia.org/wiki/Diploma_plc

https://in.investing.com/equities/diploma--plc

https://finance.yahoo.com/quote/DPLM.L/profile?p=DPLM.L

https://www.crunchbase.com/organization/diploma-plc

https://companiesmarketcap.com/

https://www.diplomaplc.com

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Leadership team
M
Mr. Jonathan Thomson (CEO & Director)
M
Mr. Chris Davies (Interim Group Chief Financial Officer)
M
Mr. John Morrison (Group Company Sec. & Head of Legal)
Products / Services
Supply Chain Management
Number of Employees
1,000 - 20,000
Address
London, England, United Kingdom
Established
1931-01-01
Net Income
S_100M_500M
Revenue
$1B+
Traded as
DPLM.L
Website
https://www.diplomaplc.com
Last Updated: 2026
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