Eurostar International Limited is a British rail operator. It operates between London, Paris and Brussels in partnership with SNCF and SNCB.

RDG brings together all passenger and freight operators in the UK with Network Rail and HS2, providing services and support to groups of members.

JSC “Ukrainian Railways”, partner of CER, is the national railway of Ukraine.

The Swiss capacity allocation body (Schweizerische Trassenvergabestelle - TVS) is a federal not-for-profit entity under public law with a separate legal personality. Owned by the Swiss federal government, the TVS began operating on 1 January 2021 as the successor organisation of Trasse Schweiz AG.  

EUROFIMA European Company for the Financing of Railroad Rolling Stock is a supranational organisation located in Basel, Switzerland. It supports its shareholder railways as well as other railway bodies in renewing and modernising their equipment.

SBB is the national railway company in Switzerland, both providing transport services and managing rail infrastructure

BLS is a Swiss - partly private - rail company, operating different regional lines in passenger traffic and connecting mainly Italy with nothern Europe in freight traffic.

Tågföretagen is the trade and employers' association formed through a merger of the Association of Swedish Train Operating Companies (ASTOC) and the rail transport companies within Almega.

Euskotren is the Basque rail freight and passenger operator.

RENFE Operadora is the national railway company in Spain providing transport services.