Union says Merseyrail and Northern train strikes have "solid support"
A strike by rail workers at two train operators in disputes about staffing and driver-only operation is being "solidly supported".
Members of the Rail, Maritime and Transport union on Northern launched a three-day walkout, while guards on Merseyrail will strike today and on Monday.
Services on both operators were hit, with passengers urged to check before they travel.
Mr Cash called for both companies to "get out of the bunker" and start talking seriously with the union.
Most Merseyrail services are planned to run every half hour from around 7am to 7pm, although will not stop at some stations.
Northern is planning on running more than 40% of services on revised timetables between 7am and 7pm today and Monday, and between around 9am and 5pm on Sunday.
Operators are advising customers to plan their journey and allow extra time for travel.