Macalloy

McCalls Special Products Ltd is a British manufacturer of steel bar and cable components for tensioned concrete, ground anchors, curtain walling, and steel structures. It operates under the Macalloy brand and claims to be a world leader in that market.

Macalloy's work supports landmarks including the Sphere at the Academy Museum of Motion Pictures, VTB Stadium, Stade Roland Garros, Tottenham Hotspur Stadium, Soccer City Stadium, Marina Bay Sands, Jewel Changi Airport, Forth Road Bridge, and Burj Al Arab. As of 2021, 3⁄4 of the company's products are exported.