Network Rail workers are poised to stage fresh strikes in a bitter row over pay, jobs and conditions, that threatens fresh disruption to services.
Members of the Rail, Maritime and Transport union (RMT), will walk out over disagreements on November 3, 5, and 7.
In separate disputes, RMT members on London Overground, and on London Underground, will also strike on November 3.
The union has accused Network Rail of attempting to impose “drastic changes” in working practices on its staff, and is concerned that the company is contacting workers directly, which the union says is undermining “delicate talks”.