STROUD MP Neil Carmichael has been confirmed safe and well after major security alert at the Palace of Westminster.

The Conservative MP was among others in lockdown in Parliament after a man carrying a knife charged through the gates into the front yard of the parliamentary compound.

An aide at the MP’s office confirmed to the SNJ that he was not involved in the incident.

Five people including an armed police officer and the attacker were killed near Parliament in what Scotland Yard are treating as a terrorist incident.

A woman was among several pedestrians struck by a car on Westminster Bridge, before it crashed into railings.

Police said an officer protecting Parliament was stabbed by an attacker, who was shot by police.

At least 20 people were injured, including three other officers.

Air ambulance medics came from the helicopter to assist the casualties.

The sitting in the House of Commons was suspended while police officers sealed off the area around the incident.

Cotswolds MP Geoffrey Clifton-Brown is safe and well. He has been confined to his office and told to lock the door and not emerge until given the all clear.

“A vote had just been closed and I walked with my colleagues to Portcullis House, when a vast number of people told us all to 'run, run, run',” he said.

"We ran to Portcullis House and I went to my office which faces on to Bridge Street.

"I didn't personally see what happened but my staff did, they said a man in an SUV was driving down Westminster Bridge trying to mow people down.

"He killed at least two people and must have severely injured more. He slammed his car into someone against the bridge and fled his vehicle.

"After running around the corner he attacked a police man with two knives. Another officer then shot the man, and we aren't sure whether he was killed.

"We're all very traumatised and upset but all safe and locked in my office."

Police have confirmed that they are currently treating it as a terrorist incident.

Immediately before the incident, at around 2.45pm, a crowd of passers-by was seen running from the direction of Westminster Bridge and around the corner into Parliament Square.

One of them appeared to have had clothes removed as emergency workers attempted to resuscitate the pair.

Parliament Square was closed to traffic. An ambulance entered the gates to New Palace Yard.

London Ambulance Service Deputy Director of Operations Pauline Cranmer said:

“We were called at 2.40pm to Westminster Bridge to reports of an incident, with the first crew arriving within six minutes.

“We have sent a number of resources to the scene including ambulance crews, London’s Air Ambulance and our Hazardous Area Response Team.

“We are working closely with other members of the emergency services at the scene, with our priority being to ensure patients receive the medical help they need as quickly as possible.

“We have declared a major incident and our priority is to assess patients and ensure that they are treated and taken to hospital as soon as possible.

“As we are very busy dealing with this incident, we would ask the public to only call us in a genuine emergency.”

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Photos by Kirsty Wigglesworth/AP