More than 40,000 members of the RMT union, which represents rail workers, are striking over pay and redundancies, bringing much of the country's railway system to a halt. The union has promised more walkouts throughout the summer if the dispute isn't resolved. On the Sky News Daily podcast, Niall Paterson speaks to an RMT representative, Conservative chair of the transport committee Huw Merriman, and A-level students who’re struggling to get to their exams. Editor - Philly Beaumont Podcast producers - Rosie Gillott & Emma-Rae Woodhouse