Exclusive: Former Australian PM witnessed ‘shocking act of perjury’ and says MI5 are still trying to hide something

The former Australian prime minister Malcolm Turnbull has accused the UK government of hypocrisy and concealment over the way it continues to block the release of secret files about the Spycatcher affair.

Before entering politics, Turnbull was a barrister for Peter Wright, a retired senior MI5 intelligence officer who revealed a series of illegal activities by the British security services in his memoir Spycatcher.