ROYAL MAIL bosses are “intimidating, gaslighting and mocking” their own staff online, the Communication Workers Union (CWU) charged today.

The union strongly rejected claims from the privatised firm that a “culture of intimidation is leading to wholly unacceptable behaviour” on picket lines nationwide, as striking workers fight for the future of the 500-year-old service.

The CWU, which earlier this week held another 48-hour strike over the company’s attempts to “impose gig-economy-style working conditions and more cuts to real-terms pay,” stressed that pickets have been peaceful during the five-month dispute.