Virgin Trains East Coast workers have voted to stage three 24-hour strikes in August.
Rail union RMT has confirmed the action over a threat to jobs, working conditions and safety after an 84 per cent vote was announced earlier this week.
Members will walk out from 03:00 on 19, 26 and 29 August and ban overtime for 48 hours from August 27.
The union said Virgin East Coast is threatening almost 200 jobs and was trying to "bulldoze through a package of cash-led measures that would decimate jobs, working conditions and threaten the safety regime that currently ensures a guard on every train".
Mr Cash added: "The company have chosen to treat the negotiations as a game thus far, merely going through the motions of pretending they did not yet know what their plans entailed.
"To behave like that is to treat the union and its members with pure contempt."
Sign up to BBT’s twice-weekly newsletter