Black led major programmes with clients including RBS, BP, McKinsey, Barclays, Zurich, InterCity and Sizewell B.
Since the closure of Garrett's, the town's economy has been dominated by the two nuclear power stations on the coast at Sizewell: the now decommissioned Magnox reactor of Sizewell A and the more modern Pressurised Water Reactor of Sizewell B. A number of smaller companies operate from industrial areas within the town.
Before construction commenced, the design of Sizewell B was subjected to a detailed safety review by the Nuclear Installations Inspectorate (NII), and a lengthy public inquiry.