Their DMU shortage is getting worse, some services to be withdrawn from this coming Monday 31st March:
https://www.westmidlandsrailway.co.uk/travel-information/service-disruptions/snow-hill-lines-amended-timetable-spring-2025
https://www.westmidlandsrailway.co.uk/travel-information/service-disruptions/snow-hill-lines-amended-timetable-spring-2025