With capacity for 1,344 prisoners and a completion target of 2028, HMP Glasgow is being constructed on a challenging brownfield site near the city centre. RBL has been involved in the development of the piled foundation scheme since summer 2022, working closely with Kier and the project engineer Curtins to develop a robust, cost-effective solution tailored to the site’s complex ground conditions. 

Following successful preliminary testing in early 2025, RBL delivered an advanced works package of nearly 700 Driven Precast Concrete Piles between March and April. The main works, comprising approximately 4,000 additional piles, are set to begin in July 2025. At peak, up to four piling rigs will be operating simultaneously on site, a significant logistical and engineering achievement that reflects the scale and urgency of the project.  

The piles, ranging in depth from 6 to 16 metres, were selected for their versatility, speed of installation, and sustainability benefits. Manufactured off-site at RBL’s headquarters, precast piles reduce waste, minimise site disruption, and offer a lower carbon footprint compared to traditional cast-in-situ methods. Their use on this project supports both programme efficiency and environmental responsibility, key priorities for both RBL and Kier. 

Speaking on the project, Gavin Hay, Scotland area manager at RBL, said: “This is a flagship project for the business and a testament to the value of early contractor involvement. Our long-standing experience in the region, combined with rigorous testing and collaboration with  Kier, has enabled us to deliver a robust foundation solution for one of the most important public sector developments in recent years.”