'Nothing to suggest' security services could have prevented Westminster attack

"I have heard nothing that suggests to me that it would have been possible to stop it."

There are currently no grounds to believe that failings by the security and intelligence agencies were to blame for the Westminster terror attack, the chair of the parliamentary committee which oversees their work has said.

The chairman of the Intelligence and Security Committee, former attorney general Dominic Grieve, also said it was wrong to think that arming all police officers on the parliamentary estate was a "panacaea" to preventing a repeat of the atrocity.