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    ContractsHS2 Data Transmission Network
    Closed contract

    HS2 Data Transmission Network

    Contract value
    £10m
    Closed 7 Sept 2026

    Design and supply a comprehensive Data Transmission Network for HS2 including critical and protected networks, secure external interfaces, and master clock systems for safe and reliable train operations.

    🇬🇧United KingdomPublished 25 Aug 2026· 1 months agoviaContracts Finder
    Contract value
    £10m
    Closed 7 Sept 2026
    Tender deadline passed on 7 Sept 2026.

    Decision brief

    4 fields
    • Contract value
      est.£10,000,000
      Pounds sterling
    • Tender closed
      7 Sept 2026
      2 weeks ago
    • Sector
      Media & Communications
      Browse related listings
    • Location
      🇬🇧United Kingdom

    Lifecycle

    Closed

    Tender closed on 7 Sept 2026. Awaiting award.

    25 Aug 2026Today7 Sept 2026

    Brief

    HS2 requires a Data Transmission Network (DTN) to provide critical network transport and central services for reliable train operations. The DTN must deliver: (1) a Critical network for safety-related connected subsystems; (2) a Protected network for non-safety subsystems; (3) a secure, geo-redundant external interface via a Demilitarized Zone (DMZ) that aggregates internet, cloud, and Network Rail connectivity; (4) central compute and servers with internal and external security protections; (5) a Master Clock System providing precise timing via Precision Time Protocol (PTP), Synchronous Ethernet (SyncE), and Network Time Protocol (NTP); and (6) supporting services including DHCP, DNS, AAA authentication, and Network Management System (NMS). Optical and electrical SFP connections will facilitate all required interconnectivity. This is a critical infrastructure project requiring expertise in railway network systems, cybersecurity, redundancy design, and precision timing protocols.

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    View on sourceContracts Finder

    Original closed notice on the publisher's site

    Publisher
    UK Cabinet Office
    Licence
    OGL v3.0
    Source
    contractsfinder.service.gov.uk
    Record ID
    16926aa2-bb03-4ff3-ba8f-75d82d69ca36-911907
    SM
    Buyer
    SIEMENS MOBILITY LIMITED
    Sector
    Media & Communications