The RMT Union has announced an overwhelming (over 98%) vote by their Train Managers (also known as Guards or Conductors or Senior Conductors on other operators) over a dispute about working on their rest days (days that they would have off similar to weekends but elsewhere in the week).
No strike dates have been set, just the authority to the union to do so. Any strikes must be announced a minimum of 14 days in advance.
Another train company has recently settled their dispute on similar grounds offering incentive for working Saturdays.
Nothing to worry about, just some advance knowledge. Watch for further developments.
This is limited to Avant West Coast.