Londoners are facing a day of travel misery as the largest train and Tube strike in 30 years goes ahead today (Tuesday, June 21).<br /><br />Thousands of workers in the Rail, Maritime and Transport (RMT) union at Network Rail and 13 train operators are taking part in the strike - the biggest railway industrial action in years.<br /><br />Train services up and down the country are expected to be plunged into chaos, while a strike on the London Underground across the entire network is set to bring the capital to a halt.<br /><br />Video: SWNS
