The nomination of Siemens would see it break into the French high-speed market for the first time, as all French and French subsidiary high-speed operators use TGV derivatives produced by Alstom.[196] Alstom attempted legal action to prevent Eurostar from acquiring German-built trains, claiming that the Siemens sets ordered would breach Channel Tunnel safety rules,[197] but this was thrown out of court.[198] Alstom said, after its High Court defeat, that it would "pursue alternative legal options to uphold its position".