The use of Public Private Partnerships (PPP) as the vehicle to procure large-scale social and physical infrastructure projects is becoming increasingly deployed around the globe. This international study evaluated the use of PPP procurement in the UK, Australia and China as three of the most mature and rapidly developing users of the PPP procurement route. It focused on the ways of improving digitalisation in PPP procurement with the use of Building Information Modelling (BIM) and its impact on early-stage estimating. This research aimed at developing an execution framework for BIM-enabled early-stage estimating for PPP procured projects, learning from the situations in these three most advanced user countries. The expectation is that such a framework will also help the rapidly developing countries, who are increasingly reliant of PPP types of procurement.