Latest: Five dead, 40 injured in Westminster attack: Deceased police officer named

Five people were killed in the Westminster terror attack, including the police officer who was stabbed and his attacker.

WHAT WE KNOW SO FAR:

• Five people have died and around 40 others have been injured in what police are treating as a terrorist incident near the UK Houses of Parliament in central London;
• One woman hit by the attacker's car before he reached Parliament was confirmed dead by a doctor at St Thomas' Hospital
• The attacker drove a grey Hyundai i40 across Westminster Bridge before crashing it into railings then running through the gates of the Palace of Westminster at about 2.30pm;
• A police officer, who was then stabbed, has since died;
• The knifeman, who was shot by police and received treatment, has since died.
• Another woman who apparently fell into the Thames was rescued and given urgent medical treatment on a nearby pier
• Around three shots were fired outside the Palace of Westminster after the knifeman ran through the gates waving a weapon;
• Some eyewitness reports say the car was deliberately driven onto the pavement at Westminster Bridge.
• London Ambulance Service said paramedics had treated at least 10 patients on Westminster Bridge;
• The French Prime Minister has confirmed that several French school children are among the injured as well as four university students from Lancashire.
• World leaders have condemned the attack in Westminster.
• Police believe the attacker acted alone.
• Theresa May vows that "the forces of evil" would never be allowed "to drive us apart".
• The UK police officer who was killed today has been named by Scotland Yard as Keith Palmer.