Switched Reluctance Drives Ltd (SRDL) is a leading engineering and technology provider in the field of advanced electrical machines and drives systems, with a particular focus on switched reluctance technology. The company has pioneered the development, application and commercialisation of switched reluctance technology under its SR Drive^® trademark and is now the world leader in this area.

The company was founded in 1980, having grown out of fundamental research work carried out at two leading UK universities (Leeds and Nottingham). Since then, the company has gained 25 years experience collaborating with customers on new product development to improve their profitability. SRDL undertakes research, development, and licensing of their switched reluctance SR Drive^® technology and other advanced electrical drive techniques across a worldwide spectrum of applications.

In order to meet rapidly increasing demand for industrial products, a second operating company was established in 1999. SR Drives Manufacturing Ltd (SRDML) is dedicated to the manufacture and sale of complete SR Drive^® systems, comprising both motors and electronic control units, with a major focus on industrial applications. In addition, SRDML supplies prototype and sample hardware required by the development programs carried out by SRDL.