55.Main sectors of the UK economy The UK national economy can be divided into three main areas:primary industries,such as agriculture,fishing and mining;secondary industries which manufacture complex goods from those primary products;and tertiary (or service)industries such as banking,insurance, tourism and the retailing. 55. Main sectors of the UK economy ◆ The UK national economy can be divided into three main areas: primary industries, such as agriculture, fishing and mining; secondary industries which manufacture complex goods from those primary products; and tertiary (or service) industries such as banking, insurance, tourism and the retailing