Passengers could face six more months of strike action by thousands of rail workers after a vote by a rail union.
Members of the RMT union working at Network Rail and 14 train companies have voted in favour of further action.
Further strikes are likely unless a national dispute over pay, job security and working conditions is resolved.
Rail operators said passengers would be “dismayed by this outcome”, adding further strikes would be counterproductive.
Members of the RMT have already taken part in eight days of strike action since June which brought much of the rail network to a standstill.
The union said just over 91% of votes in its latest ballot were in favour of further strikes, with the average turnout 70.2%. It said more than 40,000 members had been balloted.
RMT general secretary Mick Lynch said the union was “determined to continue with this campaign until the employers understand that they need to respond to our members’ aspirations on job security, pay and working…