Hock Liong Liew is a Technical Director Ground Engineering with Mott MacDonald. He has been involved in several high-profile infrastructure projects, including Crossrail in London and High Speed 2 (HS2) in the UK. He has contributed significantly to advancing the Observational Method in geotechnical engineering. This approach involves using real-time data during construction to optimise designs and improve safety and efficiency. For example, he played a pivotal role in implementing this method in Crossrail Liverpool Street station and HS2, where he leveraged digital innovations such as the DAARWIN platform to enhance predictive modelling and streamline project timelines.