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 globe-trotting couple from Leicestershire are travelling the world but still keeping their full time jobs.
Most places cloudy, although clearer in the southeast.
Staying cloudy but mostly dry.