CIBSE Silver Medal 2026 Winners

Ian Giles has made a remarkable contribution to CIBSE, facilities management, and asset management over more than 50 years in the profession. Through leadership roles across multiple CIBSE groups, technical authorship, and his influential work on Guide M, SFG20, and asset standards, he has strengthened industry practice, professional development, and operational performance. 

Ka-Yue Leung has devoted nearly 40 years to advancing building services engineering through public-sector leadership, professional development, and sustained service to CIBSE Hong Kong Region. As Regional Chair and long-serving committee member, he has championed training, sustainability, digital innovation, and professional excellence, leaving a lasting impact across Hong Kong and beyond. 

John Mardaljevic has made an exceptional contribution to lighting and building performance over more than 30 years. Through pioneering Climate Based Daylight Modelling, leadership of the CIBSE Daylight Group, and influential standards development, he has transformed daylight assessment worldwide and strengthened CIBSE’s reputation as a leader in technical excellence. 

Kevin Mitchell has delivered outstanding service to CIBSE and the global building services profession over almost 30 years. As CIBSE President in 2022, he inspired the next generation of engineers while strengthening international partnerships and member engagement. His leadership across major global projects and commitment to technical excellence have advanced engineering worldwide. 

Andrew More has dedicated more than 40 years to building services engineering and nearly two decades of active service within CIBSE’s Heritage and Retrofit Group. As Chair, he has provided thoughtful leadership on the decarbonisation of historic buildings, championing evidence-based solutions, the reuse of existing services, and the preservation of engineering heritage while advancing sustainability. 

Tadj Oreszczyn has transformed the understanding of building performance, energy demand, and health through four decades of pioneering research and leadership. As a CIBSE Vice President, academic leader, and trusted government adviser, he has bridged academia and industry, shaping policy, advancing knowledge, and influencing generations of researchers and practitioners. 

Brian Whitehead has demonstrated extraordinary dedication to CIBSE through 26 years of continuous voluntary service. As a committee leader, mentor, and advocate for the profession, he has strengthened membership engagement, supported technical development, and helped develop future generations of engineers. His commitment, integrity, and leadership have left a lasting legacy within CIBSE.