About 40,000 railway workers will leave on Saturday, October 8 for the third day of a rail strike next month.
The Rail, Maritime and Transport (RMT) union said the strike would affect its members at Network Rail and 15 train operators.
Those operators are Chiltern Railways, Cross Country Trains, Greater Anglia, LNER, East Midlands Railway, c2c, Great Western Railway, Hull Trains Northern Trains, South Eastern, South Western Railway, Transpennine Express, Avanti West Coast, West Midlands Trains and GTR (including Gatwick Express).
RMT Secretary General Mick Lynch said he was encouraged by the recent meeting between the union and new Transport Secretary Anne-Marie Trevelyan.
But he added: “However, as no new offers have been made, our members have no choice but to continue with this strike action.
“We will continue to negotiate in good faith, but employers and governments need to understand how long our industrial campaign will continue.”
The news comes just days after drivers at 12 operators announced they would be leaving on Saturday, October 1 and Wednesday, October 5.
Strikes by union members Aslef could affect both the London Marathon and the Tory party convention.
Participating operators are Avanti West Coast, Chiltern Railways, CrossCountry, Greater Anglia, Great Western Railway, Hull Trains, LNER, London Overground, Northern Trains, Southeast, TransPennine Express and West Midlands Trains.
Railways is just one sector affected by industrial activity – others that stand out include Royal Mail workers, dock workers, lawyers and BT staff.
Every union is fighting to secure a pay rise that will help their members fend off the worst of a squeeze from cost of living crisis.