Kier Group engaged Prefabricated Solutions Ltd (PSL) to design, manufacture, and deliver over 400 prefabricated modules for the HMP Millsike project. PSL successfully completed and stored the modules ahead of schedule, ready for early call-off, significantly contributing to the project’s overall efficiency and success.
Key Deliverables:
- 411 Workshop Modules
- 80 Corridor Service Modules
- 28 Plantroom Modules

Project Highlights
Seamless Collaboration
From inception to completion, PSL’s collaborative approach ensured a seamless workflow. Their appetite for innovation and proactive problem-solving impressed Kier’s team, including seasoned professionals with over 15 years of experience in the Design for Manufacture and Assembly (DfMA) sector. This partnership fostered a culture of trust and efficiency that was crucial to the project’s success.
Efficient Design Integration
PSL played a pivotal role in the early design phases, integrating the prefabricated modules into the federated model. Collaboration with multiple stakeholders, including MEP designers and architects, standardised key aspects such as Build Works in Coordination (BWIC) and door positioning. These early-stage efforts streamlined installation processes, reducing potential issues on-site.
Proactive Problem-Solving
Despite minor challenges during installation, PSL’s team maintained a proactive and solution-oriented mindset. Their ability to address issues promptly, combined with exceptional aftercare services, exceeded expectations and ensured minimal disruption to project timelines.
Logistics and Installation Efficiency
By delivering prefabricated modules aligned with the project’s schedule, PSL significantly reduced on-site labour requirements, optimised logistics, and enhanced safety. This efficiency allowed for faster installation and contributed to the project’s timely delivery.
Key Benefits
Improved Safety:
Offsite manufacturing minimised on-site risks, creating a safer working environment for all project stakeholders.
High-Quality Output:
All modules met stringent quality standards, with PSL’s proactive approach ensuring minimal disruptions on-site.
Time and Cost Savings:
Early design engagement and prefabrication simplified complex challenges, resulting in reduced programme durations and cost efficiencies.