Michael John Glidden Henderson

Sweett Group Ltd. provides construction and property consulting services. The company was founded on October 20, 1997 and is headquartered in London, the United Kingdom.

Cookson Group plc is a materials science company which supplies consumables used mainly in the production of steel, foundry castings and electronics. It operated in three reportable segments: Engineered Ceramics, Performance Materials and Precious Metals Processing. The Engineered Ceramics segment is a manufacturing and marketing of high performance specialty ceramic refractory products. The Performance Materials segment supplies consumable electronics assembly materials and advanced surface treatment and electroplating chemicals. The Precious Metals Processing is a leading supplier of fabricated precious metals to the jewellery industry in the UK, France and Spain, and also has significant precious metal refining operations. The company was founded by Isaac Cookson in 1930 and is headquartered in London, the United Kingdom.

Part of Investec Ltd., Guinness Mahon Holdings Plc is an investment holding British company. The private company is based in London, UK.

Founded in 1930, Venator Group is a British chemicals company that specializes in chemicals and chemical preparations not elsewhere classified. Part of Venator Materials Plc, the private company is based in Stockton-on-Tees, UK.