The 1900 Island, BBC2, 7pm

NEW series. Four families with a longing to escape the demands of the modern world experience life in a fishing community as it was at the turn of the 20th century, heading to the small island of Llanddwyn off the coast of Anglesey. In the opening programme, the Powers, the Davies, the Barkers and couple Kate Evans and Arwel John realise they must adapt quickly – but bad weather, lack of experience and limited rations lead to hunger and frustrations.

Britain’s Toxic Air Scandal: Dispatches, C4, 8pm

ONE in three children in the UK is growing up inhaling unsafe levels of air pollution. Dispatches runs a world-first experiment to reduce hundreds of primary school children’s exposure to toxic air. Reporter Morland Sanders reveals that it’s not just exhausts that produce dangerous emissions, with previously unidentified toxins coming off every vehicle, even electric ones. Dispatches asks: is the Government doing enough to protect our children’s health? Is the motor industry to blame? And what can we do to prevent dangerous exposure to children now?

War on Plastic with Hugh and Anita, BBC1, 9pm

EVERY minute of every day, the equivalent of a garbage lorry full of plastic is emptied into the world’s oceans. In a new three-part series, Hugh Fearnley-Whittingstall and Anita Rani take an in-depth look at the problem and at ways we can try to reduce it. They challenge big businesses to do more and ask the Government about addressing recycling and plastic production. But perhaps the most interesting segment involves an entire street in Bristol whose householders are challenged to significantly reduce the amount of single-use plastic they use.

Murdered in Paradise: The Killing of Jean Hanlon, Channel 5, 10pm

THIS documentary explores the case of Jean Hanlon, a 53-year-old mother-of-three from Dumfries whose body was discovered in a harbour on Crete in March 2009. The coroner ruled her death as accidental but her family started to question the findings. In March of this year, Jean’s son, Michael Porter, said the family’s quest for answers would go on even though a decade had passed.