ICI Heavy Organic Chemicals Division
1957 the Billingham Division was split into two:
- one, which continued to be called the Billingham Division, dealt primarily with ammonia and fertiliser products (ICI Agricultural Division)
- the other, the Heavy Organic Chemicals Division, dealt with organic products derived in the first instance from the oil crackers at the company's Wilton Works
Later the organic chemicals side became Petrochemicals Division, with new headquarters at Wilton, and then was merged with Plastics Division as ICI Petrochemicals and Plastics Division