Train drivers are set to take industrial action next month. Drivers at 16 train operators will refuse to work overtime from Monday, July 3 to Saturday, July 8.
The action will coincide with the first week of the Wimbledon tennis tournament. It means there could be disruption to services and those heading to Wimbledon could face delays.
Mick Whelan, general secretary of union Aslef, said: "Once again, we find ourselves with no alternative but to take this action. We have continually come to the negotiating table in good faith, seeking to resolve this dispute.
