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Amentum, a leading global engineering and project management firm, was advancing a significant defence infrastructure programme in South East England. As the project approached RIBA Stage 3 sign-off, it became clear that the existing delivery schedule was based on incorrect assumptions, making the baseline undeliverable. This misalignment presented serious risks to the programme's timeline, cost certainty and overall success.

G&T was appointed to provide Programme and Project Controls services to address these challenges. Working closely with Amentum's team, G&T developed a robust and achievable schedule aligned with RIBA Stage 3 requirements. A detailed cost estimate was produced to establish a revised change control baseline. G&T also implemented a professional risk management system, supporting the development of comprehensive risk and opportunity schedules. By calculating project risk exposure and advising on appropriate contingency allowances, G&T strengthened the project's resilience. In addition, a reconciliation document was created to align the approved baseline with the revised version, providing evidence to support the necessary changes. G&T further enhanced delivery across the wider programme by developing best practice techniques for baseline and change management control.

G&T's expertise enabled the project to achieve a realistic and deliverable schedule, supported by a robust cost estimate and a comprehensive risk management approach. This mitigated immediate risks and set the foundation for long-term programme success. In recognition of its impact, G&T was awarded a place on Amentum’s long-term framework to provide project controls and commercial support across the wider programme and future works. G&T’s continued involvement has enhanced the quality and consistency of delivery, including support for a £1.6 billion new manufacturing facility, helping to reinforce Amentum’s leadership in defence infrastructure development.