Ultra Electronics is a British defense company that specializes in the design and manufacture of electronic systems and components. The company was founded in 1920 and is headquartered in Greenford, England. Ultra Electronics has over 4,000 employees and operates in several countries around the world. The company's products are used in a variety of applications, including defense, aerospace, and security. Ultra Electronics is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.