Islington (ĭzˈlĭngtən) [key], inner borough (1991 pop. 155,200) of Greater London, SE England. Islington, in the north, is mostly residential, while Finsbury, in the south, is highly industrialized. Industries include special and electrical engineering, printing, food processing, and brewing. Clothing, furniture, and scientific, surgical, and optical instruments are also manufactured. Finsbury has an important wholesale trade in industrial equipment and supplies. Bunhill Fields in Finsbury contains the graves of William Blake, Daniel Defoe, John Bunyan, and Isaac Watts. John Wesley's chapel and house and the Sadler's Wells Theatre, former home of the Royal Ballet, are also in Finsbury. The City Univ. and the Polytechnic of North London are located in the borough.