Donald Sinclair Macpherson Robertson

Part of Happold LLP, Buro Happold Engineers Ltd. is a consulting engineering and British advisory company founded in 1986. The company is based in Bath, UK. Buro Happold Engineers specializes in delivering creative and value-led building and city solutions for an ever-changing world. The company offers integrated consultancy services of engineers, consultants, and advisers. The company's inclusive design team plans for inclusivity from the outset to deliver high-quality environments that meet the needs of their clients' users. The company has developed digital twins into a virtual reality environment, allowing their clients to walk or fly through their project site.

Part of PLC Nominees (Pty) Ltd., Tarmac Group Ltd. is a British company that supplies construction materials including aggregates, asphalt, cement, lime, concrete, and building products. The company is based in Birmingham, UK and was founded in 1999.

Metallon Corporation Management Services Ltd. is a private gold producer, developer, and explorer in southern Africa. The private company is based in the United Kingdom and has mines located in Zimbabwe, including the How mine, which is about 30 kilometers southeast of Bulawayo, and another mine located about 50 kilometers north of Harare in the province. The British company has three operational mines and is committed to expanding its reserves and resources through exploration. Metallon's focus is on low-cost, high-grade mining operations, and all of its five mines have potential for further exploration. Metallon is committed to increasing its exploration and mining activities throughout southern Africa.

Part of Anglo American Plc, Mondi Europe Ltd. is a British company that produces paper and packaging products. The company is based in Addlestone, UK.