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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An 82-year-old lollipop man has been left too scared to return to work after a "senseless" attack in which his lollipop stick was stolen.
Cold and windy with further scattered sleet and snow showers overnight, most of these falling in the north and west.
A cold and blustery night with rain, sleet and snow showers. These will be most frequent in the northwest with snow accumulations possible.