Five terror attacks foiled in last 10 weeks as security services hit back over accusations of blunders
The security services have foiled five attacks in the past two months since the Westminster attack, a senior Whitehall source has said.
Defending against accusations that MI5 had been repeatedly warned the Manchester suicide bomber, Salman Abedi, was dangerous, the source outlined the scale of the job facing counter-terrorism officials.
The source said MI5 is currently managing 500 active investigations, involving 3,000 subjects of interest at any one time.
The source said: “Where former subjects of interest show sufficient risk of reengaging in terrorism, MI5 can consider reopening the investigation, but this process inevitably relies on difficult professional judgments based on partial information.”