London attack as it happened: Five dead and 40 injured after terror incident in Westminster

Westminster terror attack: Timeline of events

A police officer has been stabbed and an alleged assailant shot by armed police outside the Houses of Parliament.

Here's what we know so far:

• Police officer died after being stabbed outside Parliament
• Two people reported dead after a car ploughed into crowd on Westminster bridge causing multiple casualties
• Metropolitan police are treating this as a terrorist incident
• Eyewitness account of the stabbing incident outside Parliament gate
• Donald Trump has been briefed on the attack, Sean Spicer confirms
• Theresa May was '40 yards away' from scene of stabbing, was immediately evacuated and confirmed safe
• House of Commons session suspended and MPs evacuated

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Commons Leader David Lidington has told MPs a "police officer has been stabbed" and the "alleged assailant was shot by armed police" following a "serious" incident within the parliamentary estate.

Minutes later, an emergency services helicopter landed in Parliament Square, as sirens were heard outside.

Iframe:

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

A woman was confirmed dead after a car ploughed into corwds on Westminster Bridge causing multiple casualties (Reuters)

Two people lay on the ground in the yard. One of them appeared to have had clothes removed as emergency workers attempted to resuscitate the pair.

Parliament Square was closed to traffic.

[27 March 2017 19:10 · Rob Merrick]

Ouch!! Emily Thornberry: “We are a national party” Jon Snow: “You were a national party - now you’re a shambles” #channel4news

[27 March 2017 19:11 · Jon Stone]

it’s a good exhibition! twitter.com/IndyArts/statu…

[27 March 2017 19:51 · rcolvile]

Ouch. Ouch. Ouch. Ouch. (Stats via @SMCommission ) http://pbs.twimg.com/media/C761_2pXgAA1EE4.jpg

[27 March 2017 20:55 · Jon Stone]

I like at how the worst possible Brexit outcome is called a ‘Most Favoured Nation’ tariff, makes it sound like a great option #bbcqt

[27 March 2017 20:55 · Jon Stone]

I like at how the worst possible Brexit outcome is called a ‘Most Favoured Nation’ tariff, makes it sound actually pretty good #bbcqt

[27 March 2017 20:58 · Jon Stone]

I’m watching the Brexit special of #bbcqt for work, it’s basically the argument that would occur if someone burnt a union jack in a pub

[27 March 2017 21:03 · Jon Stone]

A screengrab of this headline I wrote last year seems to have gone viral, here’s the full story if you’re interested independent.co.uk/news/uk/politi… http://pbs.twimg.com/media/C780KBEWsAQz8r9.jpg

[27 March 2017 21:10 · Rob Merrick]

An "unlikely scenario" he once said....now "huge" plans....the slope gets slippier twitter.com/bbclaurak/stat…

[27 March 2017 21:12 · Jon Stone]

we have huge plans, they’re beautiful plans. the best plans twitter.com/bbclaurak/stat…

[27 March 2017 21:15 · Jon Stone]

huge, impenetrable, physical, tall, powerful, beautiful plans