Network Rail has appointed four partners have to join its Works Delivery team to form an innovative, performance-based alliance to deliver the Southern Region's up-to £9 billion estimated renewals portfolio over the next ten years.

The partners will be VolkerFitzpatrick for Buildings and Civils, Octavius for Electrification and Plant, VolkerRail for Track and Atkins for Signalling, and will cover Control Period 7 (2024-2029) and Control Period 8 (2029-34). Work is underway deciding the renewals budget for CP7 as Network Rail works to agree a final settlement with the regulator.

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The alliance, known as Southern Integrated Delivery, or SID, will be part of a new enterprise model based on the Institution of Civil Engineers' Project 13 principles, developed following significant cross-industry consultation over the last two and a half years.

With the SID, the Southern Region seeks to make a transformational change in how renewals work is delivered by merging the capabilities of Network Rail and its supply chain to develop an integrated and coordinated approach to delivery.

Through tying efficiency savings found by partners to increasing the workbank, and linking profit to extra work delivered, the SID will make the best use of resources, maximise efficiencies and be collectively incentivised to deliver value for taxpayers and the right outcomes for passengers, freight and railway funders.