Thomas Charles Andrew Diggle

Castle Waste Services Ltd. provides treatment, collection, recycling, and disposal services for hazardous and nonhazardous wastes. The company is headquartered in Llkeston, the United Kingdom.

Hillbridge Investments Ltd. is a hazardous waste management company based in Ilkeston, UK. and has subsidiaries in the United Kingdom. Hillbridge Investments specializes in handling hazardous and liquid waste for waste plants, chemical manufacturers, commercial retailers, and oil and gas refineries. The British company offers specialist waste treatment, disposal, and recycling services for commercial and industrial businesses. The private company is committed to duty of care in hazardous waste management and has accreditations, health and safety policies, insurance policies, and site permits to ensure the safe handling of waste. The company was founded in 1997.

Founded in 1983, Castle Oils Ltd. is a hazardous waste treatment and British disposal company. Part of Hillbridge Investments Ltd., the company is based in Ilkeston, UK. Castle Oils specializes in the treatment and disposal of hazardous waste.