A NEW BBC Scotland documentary will shed light on the modern history of the SNP.

Salmond and Sturgeon: A Troubled Union will feature new and extensive interviews with both former first ministers who will tell the inside stories of key moments during a period of electoral success for the party.

A wide range of prominent figures are set to share their insights with contributions from John Swinney, Nicola Sturgeon’s former chief of staff Liz Lloyd, Humza Yousaf (below), former chancellor George Osborne and Alex Salmond’s former chief of staff Geoff Aberdein.

(Image: Jane Barlow/PA)

A release date is yet to be confirmed although it will be broadcast in the run-up to the 10th anniversary of the 2014 independence referendum.

The two-episode series will chronicle key events in the political careers of Alex Salmond and Nicola Sturgeon and chart the story of how the SNP became the third-biggest party in the UK in 2015.

Produced by Firecrest Films, the series will air on BBC Scotland and on BBC iPlayer.

David Harron, commissioning editor at BBC Scotland said: "We are delighted to be bringing our audience this landmark series exploring the inside story of a remarkable political partnership.

"The series features testimony from those who were closely involved as well as candid interviews with Alex Salmond and Nicola Sturgeon themselves and offers both insights into the political intrigue of the era as well as reflections on loyalty and friendship which we hope the audience will find compelling."

READ NEXT: Humza Yousaf admits family could leave UK due to rise of Islamophobia

READ NEXT: Union makes COSLA plea ahead of Glasgow bin strikes

Head of documentaries with Firecrest Films Mick McAvoy said: "The Salmond and Sturgeon era is one of the most astonishing and dramatic periods in Britain’s modern history.

"This series reveals the inside story of a period which saw two political powerhouses, and a close group of friends and advisors, take a fringe party into the mainstream and come within grasp of achieving their dream of an independent Scotland.

"This is an emotional tale of ambition, power and broken friendships and it reveals the human cost of devoting your entire life to a political cause."