Complex sentence: Over the following decades it established a network of 83 factories across the UK making a wide variety of products, and in the late 20th century it moved into service businesses, such as monitoring CCTV images.
Split into simpler sentences: Over the following decades it established a network of 83 factories across the UK making a wide variety of products. In the late 20th century it also moved into service businesses, such as monitoring CCTV images.