12.04am BST

Before we wrap the blog up now, here is a summary of key events today:

• Britain has been facing intense pressure to give a detailed explanation of the decision to detain the partner of the Guardian journalist Glenn Greenwald after the White House confirmed that it was given a "heads-up" before David Miranda was taken into custody for nine hours at Heathrow.

• In his first interview since returning to his home in Brazil on Monday, Miranda accused Britain of a "total abuse of power" for interrogating him at the airport outside London under the Terrorism Act.

He said the authorities in the UK had pandered to the US in trying to intimidate him and force him to reveal the passwords to his computer and mobile phone.

• Miranda's detention has been widely condemned as unlawful, with Newspaper editors, human rights lawyers and civil liberties campaigners describing it as a gross abuse of the Terrorism Act 2000, which despite its scope was never meant to be used as a licence for extracting information.

Alan Rusbrudger, editor of the Guardian, has said that a perception that the US and UK governments were intent on stemming a recent tide of leaks and on pursuing the leaks' whistleblower with a vengeance is right.

• Scotland Yard has insisted that Miranda's detention was "legally and procedurally sound" and denied that he was not given access to a lawyer.

"The procedure was reviewed throughout to ensure the examination was both necessary and proportionate," the police said in a statement.

• Britain's anti-terrorist legislation watchdog has called on the Home Office and Metropolitan police to explain why anti-terror laws were used to detain Miranda for nine hours at Heathrow airport.

Amid mounting concern across the political spectrum over the treatment of David Miranda, David Anderson QC said the detention of Greenwald's partner on Sunday appeared to be "unusual".