The Documentary

Gordon Corera becomes the first journalist allowed to record inside GCHQ's listening station at Bude on Britain’s south-west coast. The station has spied on global communications satellites for decades, sucking in signals from space. He takes us from the Cold War, when GCHQ was quietly eavesdropping on the front lines in Berlin, to the current digital era. And Gordon finds out how, following the revelations of Edward Snowden, the agency has been forced out into the open.

Hossein Sharif is an Iranian boy, about to marry Hee Sue, a South Korean girl. As the families begin to meet, Sharif discovers all the criss-crossing roads that the couple's home countries have travelled. In the last 50 years, South Korea and Iran have switched places in the world table of economic prosperity. South Korea has risen while Iran has fallen behind. Hossein and Hee Sue's families begin to discover a parallel universe, a world of “might have beens” and divergent paths.

In the UK’s 2019 general election, social media platforms like Facebook, Twitter, YouTube and Instagram are playing a more prominent role than in any previous campaign. As the election enters its final stages, political scientist Travis Ridout, co-director of the highly respected Wesleyan Media Project – travels to the UK to immerses himself in current online activity. He finds out what strategies and techniques are being used to influence – or manipulate voters – and considers what lessons from the USA could be influencing the campaign.

There’s a new climate of fear in Sri Lanka. This time it’s the Muslim community who are fearful of the future. The Easter bomb attacks in Sri Lanka - targeting churches and international hotels - horrified the island. It’s suffered civil war but never known jihadi violence. But the attacks also intensified a creeping campaign by the Sinhala Buddhist majority against the Muslim community - with Muslims murdered, their businesses burned or boycotted. Jill McGivering investigates the growing climate of fear now driving many Muslims to emigrate and casting a shadow over those left behind. Producer: Caroline Finnigan (Image: Muslim boy on a bicycle in Kattankudy, Sri Lanka. Credit: Allison Joyce/Getty Images)

The work of GCHQ started just after the end of World War One as telegraph became a vital means of military communications. We hear from people who worked at the listening station in the Yorkshire seaside resort of Scarborough during World War Two and the Cold War. BBC security correspondent Gordon Corera reveals how Government Communications Headquarters – GCHQ - has been listening in for 100 years.