Please turn on JavaScript. Media requires JavaScript to play.
Royal Mail's managing director, Mark Higson, says talks were progressing with the CWU before they called strike action.
On Thursday, 43,700 members of the Communication Workers Union started a 24-hour strike.
What are these?
E-mail this to a friend
One-Minute World News 
Bookmark with:
What are these?
E-mail this to a friend