David Thewlis and Jason Watkins star in Channel 4’s alarming Dirty Business. Plus: Prof Hannah Fry gets to grips with AI. Here’s what to watch this evening 9pm, Channel 4 In 1999, eight-year-old Heather Preen died after contracting E coli while playing on a beach. Twenty years later, two men in Oxfordshire contacted their water company asking about dead fish in the local river. This striking three-part drama is based on a decade-long investigation into England’s water companies dumping raw sewage. It will have the nation furiously demanding answers. Jason Watkins, David Thewlis, Asim Chaudhry and Posy Sterling star. Hollie Richardson Continue reading...