More than 350 convicted and suspected terrorists have been freed from prison over the last seven years, figures show.
The number of suspect terrorists arrested by police has dropped 20% in the last year, figures show.
Irish police have been granted another 24 hours to question an alleged member of so-called Islamic State (IS).
The extraordinary release of a dangerous terrorist like Usman Khan from prison to kill on the streets of London highlights again the acute but highly unpredictable threat of Islamist terror anywhere in the UK.
Politicians called for an explanation yesterday after it emerged London Bridge attacker Usman Khan was freed from jail less than seven years into a 16-year sentence for terrorism.
The London Bridge attacker was a convicted terrorist released half-way through a 16-year prison sentence for a plot to bomb the London Stock Exchange.
The London Bridge attacker has been named as convicted terrorist Usman Khan, police said.
The latest terrorist attack at London Bridge appears to have echoes of the strike two years ago where eight people were killed and 48 seriously injured.
A 26-year-old man arrested on suspicion of Syria-related terror offences as he landed on a flight to Heathrow Airport was deported from Turkey over claims he was a member of so-called Islamic State, the PA news agency understands.
A 26-year-old man has been arrested on suspicion of Syria-related terror offences as he arrived in the UK from Turkey hours after authorities in Ankara said a British Islamic State suspect had been deported.
An expert on Irish terrorism has warned the threat from dissidents remains “lethal” despite the downgrading of the national threat level last week.