Who we are

TSO is the European leader in rail systems and solutions

With more than 90 years’ experience in France and across the world, TSO puts its expertise to work on:

  • Track construction, replacement and maintenance
  • Electrification and catenary upgrades
  • Survey and rail software development
  • Rail safety
  • Maintenance, repair and rebuilding of powered rolling stock

Developing synergies between the specialties of TSO and the complementary expertise available within NGE allows the Group to offer a comprehensive package for the most technically demanding projects. This ability to deliver multi-disciplinary projects is perfectly illustrated in the delivery of major projects, such as the Oloron-Bedous rail link, the Luxembourg tramway or Cuenca Tramway (Ecuador).


Track Renewal Worksite in France

Our history


TSO opens its first UK branch for HS1 PROJECT.

TSO joins NGE.

TSO has been awarded the rail system package of the Crossrail Central Section as part of ATCjv.

TSO gets involved on the Kings Cross Remodelling Project alongside Morgan Sindall

Network rail selects Balfour Beatty, ATKINS and TSO as part of the Central Rail Systems Alliance (CRSA) for their CP6 Track Renewal Scheme