Ferranti or Ferranti International plc was a UK electrical engineering and equipment firm that operated for over a century from 1885 until it went bankrupt in 1993 (the Belgian subsidiary lives on as Ferranti Computer Systems and is now part of the Nijkerk Holding). Known primarily for defence electronics, the company was once a constituent of the FTSE 100 Index.The firm was known for work in the area of power grid systems and defence electronics.