Terror-related arrests have surged to a new record high in the UK as security services confront an unprecedented threat, new figures reveal.

As armed police take to the streets of London, Alex Morales and John Ainger ask if the city has become safer or more dangerous

A man has been charged with plotting to carry out a terror attack armed with a knife, police in the UK said.

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Latest: The injuries suffered by an Irish person in the Westminster terror attack are not life threatening, the Government has been told.

As investigators piece together the background to the Westminster terror attack, the picture beginning to emerge appears to bear the hallmarks of a "lone wolf" strike.

Here's your evening update.