UK Notified Bodies
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UK Notified Bodies (UK NoBos) are UK bodies authorised to assess the compatibility of works or equipment with Technical Specifications for Interoperability (TSI) as part of the system to effectively and safely allow the interoperability of railway services within the European Union.
UK Notified Bodies may be appointed by ministers of HM Government under The Railways (Interoperability) (Notified Bodies) Regulations 2000 in six railway TSI areas: Control Centres and Signalling, Energy, Infrastructure, Maintenance, Operations and Rolling Stock.
Four companies operate as UK Notified Bodies in all six TSI areas:
