Diploma PLC
Group of 17 businesses supplying seals, precision controls, fasteners and medtech products to aerospace, energy and healthcare customers
Highlights
- New on EvolcAdded 2026-10-28
About Diploma PLC
Diploma PLC is a value-add solutions group. Its businesses are organised in three sectors: Controls, which provides precision products for aerospace, defence, datacentres, energy infrastructure and medical applications; Seals, which provides sealing and fluid power solutions for construction, agriculture, energy and water; and Life Sciences, which provides products for the medtech, in vitro diagnostics and scientific segments. Services include bespoke solutions, technical support and supply chain management.
Customers are technically demanding applications across aerospace, renewables, infrastructure and healthcare. The group operates as a decentralised structure in which each of its businesses runs independently with its own customers and products. Growth is pursued through organic expansion and acquisitions of founder-led businesses.
Diploma PLC was founded in 1999 and is headquartered in London. The group operates across North America, the UK, Europe and Australia, with c.3,500 employees worldwide. Recent acquisitions announced in 2026 include businesses added to Clarendon Specialty Fasteners, Hercules OEM and Interconnect Solutions Group.
Product: Engineered components and value-add services: fasteners, seals and fluid power, precision controls, and life sciences products, plus technical support and supply chain management.
Jobs at Diploma PLC
Leadership
- Johnny Thomson · Chief Executive OfficerSource: company website
- Wilson Ng · Chief Financial OfficerSource: company website
- Donna Catley · Group HR DirectorSource: company website
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