ESR Technology was formerly the engineering, safety and risk business of AEA Technology, which was formed from the commercial arm of the United Kingdom Atomic Energy Authority. It specializes in the provision of technical expertise, products, and services to help customers ensure asset integrity, improve machine reliability, manage safety and risk, and transfer best practice. It has customers across many sectors, including oil and gas, rail, utilities, aviation, and space and defense. It operates three centers of excellence: the National Centre of Tribology, European Space Tribology Laboratory, and the National Non-Destructive Test Centre.
The company's main operations are located at Warrington (Head Office) in England, Milton (Oxfordshire) in England, and Aberdeen in Scotland.