Communication Workers Union
Walkouts also mooted at the Royal Mail after the recent rail strikes.
While they rush to meet Christmas demand, they are fighting for fair pay and conditions
Chancellor Philip Hammond claimed he had relented to 'red' Len McCluskey over funding 'Unionlearn' scheme.
CWU union easily overcomes 50% ballot threshold.
One of Jeremy Corbyn's closest union allies warns of stoppages.
Unions deny 'Trotskyist conspiracy to bring down the Government'