Thousands of Post Office staff at more than 100 branches will strike next month in a long-running dispute over pay.
Members of the Communication Workers Union (CWU) who work at 114 Crown Post Offices - those run directly by the Post Office - will walk out on July 11.
The union has rejected a pay offer it said was worth 3%, on top of a freeze from April 2021, and a £500 lump sum.