“For me it was about showing the miners’ solidarity instead of Thatcher’s propaganda,” said Andersson.
The 75-year-old filmmaker returned to the south Wales valleys to meet some of the families he’d not seen for almost 40 years.
Ray and Kath Francis, who live in the same house in Ystrad Mynach where their four children grew up, are one of the focal points of the documentary.
Between 1984-85, Ray was among 22,000 other Welsh miners who were on strike.
His wife, Kath, joined the many other women who supported the miners by setting up food collection and distribution groups.
“When I met Kath and Ray again, it was very emotional for me – and in the same house 40 years on – it was so emotional,” said Andersson.