Elizabeth Line tunnel ventilation maintenance contract planned
Rail for London Infrastructure is preparing to award a £19m contract for essential system upkeep.
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The article clearly separates facts from comment and provides specific details about the procurement process.
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Rail for London Infrastructure (RfLI) is preparing to award a contract worth an estimated £19m, excluding VAT, for the maintenance of the Elizabeth line's tunnel ventilation and controls systems. The systems are described as fundamental to the operational railway and are vital for ensuring safety, comfort, and reliability across the 21km of twin-bore tunnels beneath central London.
The proposed contract duration is three years, commencing on 22 March 2027 and concluding on 21 March 2030. There is a provision for extensions, allowing for a maximum of two additional years. RfLI, which is responsible for the upkeep of the Elizabeth line, has outlined the systems' role in supporting both normal environmental management and emergency response, including smoke extraction and safe evacuation procedures.
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System Integration and Maintenance Needs
The tunnel ventilation and controls are fully integrated with fire detection systems and are centrally managed via an automated Supervisory Control and Data Acquisition (Scada) platform. According to a tender notice, regular and thorough maintenance is essential to guarantee the reliability, safety compliance, and continuity of service under all operational conditions, including emergencies.
Procurement Process Underway
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The procurement is being managed through a competitive flexible procedure. RfLI identified an initial longlist of 157 potential suppliers through the Rail Industry Supplier Qualification Scheme (RISQS) within categories for fixed ventilation systems maintenance and general building management services. A Market Sounding Questionnaire and Expression of Interest were issued to these suppliers on 12 November 2025.
Suppliers that registered their interest were invited to participate in the Procurement Selection Questionnaire (PSQ), which was published on 29 July 2026. Those who completed the PSQ will be invited to the Invitation to Tender (ITT) stage. RfLI anticipates that between three and nine suppliers will be invited to submit tenders for the contract. The estimated award decision date is 12 March 2027.
Further details regarding the scope of works, service requirements, site information, and evaluation criteria will be made available on TfL’s e-tendering portal. Enquiries regarding the tender process must be submitted by 5pm on 2 October, with requests to participate due by 5pm on 9 October.
Questions this report answers
+How much will the Elizabeth line tunnel ventilation maintenance contract cost?
The estimated value of the contract is £19m, excluding VAT. Including VAT, the total cost is expected to be £22.8m. This figure covers planned maintenance and repairs to the tunnel ventilation and controls systems.
+When will the contract for the Elizabeth line ventilation system be awarded?
The estimated award decision date for the contract is 12 March 2027. The contract itself is planned to run for three years from March 2027 to March 2030, with potential for two-year extensions.
+Who is responsible for maintaining the Elizabeth line's tunnel ventilation systems?
Rail for London Infrastructure (RfLI) is responsible for the maintenance of the Elizabeth line. They are procuring this contract to ensure the ongoing safety and operational reliability of the tunnel ventilation and controls systems.
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