Rail union leaders have demanded an immediate halt to cutting train guards, an issue which has led to strikes across the country, including on Southern Rail.
Mick Cash, general secretary of the Rail, Maritime and Transport union, said the election had sent out a clear message that the public have rejected cuts, austerity and privatisation.
The union is writing to Arriva Rail North, Southern and Merseyrail, firms embroiled in disputes over staffing and driver-only trains, demanding that they lift the "threat" to guards.
A demonstration has been held at Brighton railway station by passengers calling for an end to ongoing disruption.
Southern wants to increase the number of driver only-operated services but the RMT union claim safety and jobs would be at risk. Southern say jobs and safety are not at issue.
A new strike has now been announced for Tuesday next week after talks broke down at ACAS.
The management of Southern trains has tonight denied walking out of talks with the RMT union.
The two sides were in negotiations about planned changes to the role of conductors and guards on the trains. The RMT members say they are against a move to driver-only trains.
While Southern say they are trying to modernise the service. ITV Meridian's Transport Correspondent Mike Pearse spoke to Alex Foulds from Southern.