Winner: Mace

It has been another year of complex project completions for Mace, including the Rosalind Franklin Institute – one of the most space-efficient research buildings in the UK – as well as the historic Chelsea Barracks, One Crown Place, and the prestigious Hanover Square. The firm is heavily involved in the £250m development at Greenwich Square, where Mace is co-investor, developer and delivery partner. The contractor has also won roles on a number of high-profile schemes including 33 Charterhouse Street, 50 Finsbury Square and Warwick Court, as well as projects for household names in technology and software.

Having committed to becoming net zero carbon at the start of last year, by December the contractor had achieved its goal, halving emissions to 13,000 tonnes and achieving 71% renewable energy globally. Against a target of 100% waste diversion from landfill, it achieved 99.21%.

The firm’s Mace Tech business recently extended its “construction to production” programme by developing an offsite approach for longer-span steel frames. The concept has been developed and funding secured through Innovate UK to deliver prototypes and a full-scale mock-up, with industry design, manufacturing and academic partners. It incorporates cement-free concrete and low-energy electric arc furnace steel into the cassettes, providing an economic alternative to traditional construction with a 75% reduction in the embodied carbon.

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