More than 100,000 Royal Mail staff members will strike over four days in a call for a "dignified, proper pay rise."
The industrial action is set to take place on August 26 and 31 as well as September 8 and 9. It comes after a 77 percent ballot turnout from Royal Mail workers with a 97.6 percent vote in favour of the strike action.
The Communication Workers Union (CWU) rejected a pay rise offer that Royal Mail operations director Ricky McAulay said was "worth up to 5.5% for CWU grade colleagues".