Post office staff are angry that they have not had a pay rise since April 2011
Thousands of post office counter staff have voted to go on strike, in a dispute over pay and job security.
The 4,000 post office workers are angry that they have not had a pay rise for nearly two years.
They are also opposed to planned changes to the UK’s network of 373 Crown – or main – post offices.
Last month, the Post Office announced plans to close up to 70 Crown offices, and replace them with franchises based in other shops.
At the time it promised that the overall size of the network would not be affected.
Crown post offices, usually based in main High Streets, are currently losing £40m a year.
It is not yet known when the strikes will take place