Multiplex take two wins at the Building Awards 2025

London, United Kingdom. Multiplex have been named Major Contractor of the Year (over 500m) and received the prestigious Modern Retrofit Project of the Year award, for the transformative work at 76 Southbank.

In 2024, Multiplex continued to shape city skylines through technical excellence, innovation and sustainability. Delivering three landmark projects, we focused on early client engagement to advise on net zero strategies, unlock programme efficiencies and reduce carbon.

Key new projects included 75 London Wall, 50 Fenchurch Street, 72 Upper Ground and 99 City Road, where innovative structural solutions and offsite DFMA manufacturing improved efficiency, minimised embodied carbon and optimised logistics.

Multiplex pioneered industry-first tools such as the facade embodied carbon calculator, material passports, and electric arc furnace metal decking, alongside semi-autonomous M&E installation robots and CFD modelling to enhance safety and productivity.

Sustainability remained central, with low carbon fuels, electrified equipment, and the UK’s first solar PV farm at Norfolk delivering 9,000MWh annually.

People, skills and wellbeing were prioritised through apprenticeships, graduates, work placements, scenario-based leadership training and mental health initiatives.

By combining innovation, sustainability and human-centred delivery, Multiplex strengthened client satisfaction, enhanced community impact and reinforced its position as a forward-thinking construction partner.

The judges said: “This entry demonstrated a very good series of project wins and completions. The firm has an innovative approach to solving client’s problems that is worth recognising.”