SOCOTEC Forensics & Advisory provides strategic commercial management on HS2, one of Europe's most complex infrastructure developments.
Key information
- Location: London, UK
- Client: SOCOTEC Monitoring
- Project value: £40 million
- Contract: NEC3 Option C (Target Cost)

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Project details
Our quantity surveying team collaborated closely with SOCOTEC Monitoring to deliver comprehensive instrumentation and monitoring services across the S1 and S2 sections of the High Speed 2 rail project. Works involved the installation, maintenance, and continuous monitoring of critical instrumentation to ensure structural integrity during the excavation and tunnelling works in central London.
As one of the most complex infrastructure developments in Europe, HS2 required advanced instrumentation and monitoring systems to ensure the safety of the tunnelling process and the surrounding built environment in densely populated areas.

How We Contributed
Our quantity surveying services
Our role in delivering commercial management and contract administration was crucial to the successful delivery of the project. We provided contract advice and implemented robust commercial procedures, ensuring compliance with the NEC3 contract, effective cost control, and accurate cost and value reconciliation.
- Commercial management: We delivered comprehensive commercial oversight of the subcontract, including cost forecasting and reporting, budget control, and management of the target cost. By developing transparent commercial procedures, we provided the client with the insight required to make informed financial decisions and maintain full control of project costs.
- Sub-subcontractor management: We procured, managed, and coordinated sub-subcontractors to ensure deliverables were achieved on time and within budget, contributing to an efficient and well-controlled delivery process.
- NEC3 administration: We administered early warnings, compensation events, and contractual communications, ensuring the accurate assessment and timely management of compensation events. This provided strong commercial governance and helped mitigate cost overruns. Our expert guidance on the contract enabled the client to understand its complexities, reduce risk, and optimise commercial decision-making.
- Financial reporting: We produced detailed cash flow forecasts, risk analyses, and monthly commercial reports, ensuring the project board had full financial transparency at all times.
- Stakeholder engagement: Collaboration underpinned our approach. We engaged closely with all stakeholders to drive continuous performance improvements, maximise value, and ensure alignment with wider project objectives.
Our role in delivering commercial management and contract administration was crucial to the successful delivery of the project. We provided contract advice and implemented robust commercial procedures, ensuring compliance with the NEC3 contract, effective cost control, and accurate cost and value reconciliation.
- Commercial management: We delivered comprehensive commercial oversight of the subcontract, including cost forecasting and reporting, budget control, and management of the target cost. By developing transparent commercial procedures, we provided the client with the insight required to make informed financial decisions and maintain full control of project costs.
- Sub-subcontractor management: We procured, managed, and coordinated sub-subcontractors to ensure deliverables were achieved on time and within budget, contributing to an efficient and well-controlled delivery process.
- NEC3 administration: We administered early warnings, compensation events, and contractual communications, ensuring the accurate assessment and timely management of compensation events. This provided strong commercial governance and helped mitigate cost overruns. Our expert guidance on the contract enabled the client to understand its complexities, reduce risk, and optimise commercial decision-making.
- Financial reporting: We produced detailed cash flow forecasts, risk analyses, and monthly commercial reports, ensuring the project board had full financial transparency at all times.
- Stakeholder engagement: Collaboration underpinned our approach. We engaged closely with all stakeholders to drive continuous performance improvements, maximise value, and ensure alignment with wider project objectives.
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