Dutch state-owned operator Abellio runs both Merseyrail and Greater Anglia services where workers are battling against bosses’ profit-driven attack on safety.
Transport union RMT want the Dutch government to instruct Abellio not to attack guards’ jobs.
RMT officials delivered the message to the deputy ambassador.
The union says Abellio is raking in a massive €1.4 billion (£1.25bn) in revenues from its British rail operations, which the company openly admits is used to “benefit” passengers in the Netherlands through improved services and cheaper fares.
RMT general secretary Mick Cash said: “Just a fraction of the eye-watering profits shipped from Britain to the Netherlands by Abellio and other overseas rail operators would be enough to keep the guard on our trains and keep the British travelling public safe.”