Jim Reeves, from the Communication Workers' Union, says the argument to close 70 Crown Post Offices is flawed because the business is profitable.
He spoke to ITV News Central outside the Kings Heath branch in Birmingham as staff went of strike this morning.
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A woman found unconscious at Radford home taken to hospital with "serious injuries".
The wife of an alleged extremist has appeared in court accused of helping her husband buy a knife in a plot to carry out a terror attack.
Cold with heavy and occasionally wintry showers.