Andrew Threlfall
Costain
chief engineer
Andrew Threlfall
Andrew is Costain’s Group chief engineer, responsible for technical excellence and product quality across Costain’s wide project portfolio, including design delivery, construction compliance, product quality and future planning. Focus areas are safe-by-design, sustainable project delivery and risk management.
Andrew also supports technical skill development, including Costain’s FICE cohort, early careers training schemes and STEM activities. Current upskilling campaigns are aiming to improve right-first-time, building regulations and CDM compliance, low carbon/climate resilience and temporary works delivery.