A development competition was won by Prentice Estates in 1987 to develop a new headquarters building for the DOE. The building designed by Ernest Knox Architects wraps around an inner atrium and provides for some interesting facts about the construction process including…

30,000 individual pieces of stonework
1,650 different types of reconstituted stone
15,000 tonnes of concrete
250,000 clay facing bricks
2,000 tonnes of structural steelwork
670 miles of cabling
650 doors 

Structural Engineer: White Young Green
Quantity Surveyor: Denis Rooney Associates
M & E Engineer: Isherwood Boyd & Partners
M & E Contractor: Litton Group Ltd
Piling: FK Piling
Steel Structure: Ballykine Structural Engineering
Stonework: Craftstone
Windows: Albann McKinney
Tiling Supplier: Barr & Rollins Ltd