The brutalist architecture movement has broken Severfield-Rowen. This Yorkshire-based structured steel specialists, which counts the Olympic Stadium and the Shard amongst its successful projects, warned on profits on Wednesday and parted company with its chief executive, Tom Haughey. Talks are also underway with the firm's bankers... What's the problem? This: That's an artists impression of the the so-called Cheesegrater going up at 122 Leadenhall, in the City of London. Severfield has been supplying structured steel for the building - a lot of steel, given its design. But it has suffered cost over-runs, which seem to be severe. Shares in Severfield were off almost 40 per cent at pixel.