Royal Mail staff join a Communication Workers Union strike outside a post office in London. According to CWU, more than 115,000 postal workers are on strike in a dispute over pay, the biggest walkout since 2009. EPA
Royal Mail workers at a picket line outside the Basingstoke delivery office. AFP
CWU general secretary Dave Ward speaking to the media as he joins postal workers in east London. PA
A lone postal worker loads a delivery van at the Royal Mail Whitechapel delivery office in London. Bloomberg
A striking postal worker dressed as the cartoon character Postman Pat on a picket line outside the Whitechapel delivery office in London. Bloomberg
The Royal Mail Basingstoke delivery office had a 100 per cent turnout for the nationwide strike. AFP
The walk-out is being described as the biggest strike of the summer so far. PA
