Over 1,000 members of the Communication Workers Union (CWU) are on strike at the Crown Post Offices, the larger branches often located on high streets, which are the ones affected by the disruption today.
The strike will last 24-hour and it could cause “considerable delays,” according to the union.
The largest high-street branches are expected to be closed today due to the strike action.
The sub-post offices, or smaller branches in rural areas, are still operating.
A post office spokesman said: “There are 114 branches, typically in city centres, that are directly managed by Post Office and on previous strike days over a third have opened as usual. We’re disappointed that the CWU have made the decision to strike but remain hopeful that we can reach a pay agreement soon.”
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The following Crown Post Office branches could be affected by strike action on July 11:
Chester Le Street