Rail passengers are facing a fourth day of travel disruption as thousands of workers continue to strike over jobs, pay and conditions.
Members of the Rail, Maritime and Transport (RMT) union at Network Rail and 14 other train operators will walk out on Friday in action that is set to last 48 hours.
Only around 20% of normal services are due to run, with trains starting later and finishing earlier than usual.
The strike comes after train drivers in the Aslef union stopped working on Thursday, and ends a week of industrial action on the railways that has caused widespread disruption across the country.
Aslef’s general secretary Mick Whelan has warned further strikes are “inevitable” unless the deadlock between rail employers and the government is broken.
He has suggested the industrial action could escalate, saying train drivers want to go “harder and faster” after being refused a pay rise for years. Talks are expected to be held early next week, but unions have continued to accuse the government of blocking negotiations – a claim ministers have denied.