CND protesters in 1982. The Stasi kept watch on the campaign after it spoke out against human rights abuses

Files from the vaults of the Stasi reveal their frustration with the “so-called left” of the Labour Party and the British anti-nuclear movement during the last years of the Cold War.

More than 300 pages of East German records, obtained by The Times, show that the feared Communist secret police were disappointed with their access and influence in the party.

Records spanning 20 years until the fall of the Berlin Wall in 1989 were disclosed in the wake of fruitless searches for Stasi files on Jeremy Corbyn after the revelation that he met a Czechoslovak spy in London several times in the 1980s.

Stasi archivists searched for material on Mr Corbyn’s party among the 69 miles of shelves containing documents, photos, film and audio