There are confused reports that there may be a coordinated terror attack ongoing in the vicinity of the British Parliament.
Reports have emerged of a policeman being attacked inside Parliament by an unknown assailant who was later shot by plainclothes police officers at some time in the last 30 minutes.
At the same time there appears to have been a vehicular attack on Westminster Bridge adjacent to Parliament in which several civilians were mowed down by a 4×4 which then attempted to ram the outer perimeter of the Parliamentary buildings.
It is unclear whether the two incidents involve the same assailant or multiple attackers.
It is still unclear whether the attacks have been fully neutralised or could still be ongoing. The Prime Minister has been evacuated.