The first trains of the new fleet were introduced on the Kirkby line of Merseyrail’s network in January 2023. The Class 777 trains were rolled out across the Merseyrail network in December 2023.

Merseyrail had to “get good quickly” at managing passenger disruption in a turbulent first 12 months for its new trains. Neil Grabham, managing director of the rail provider which serves the Liverpool ...