- Terror suspect in his twenties has been arrested after Ford Fiesta hit crowds and smashed into barriers
- Suspect was pulled from the car by armed officers who surrounded vehicle outside St Stephen's entrance
- Unnamed man is refusing to co-operate or give any potential motive but he may have aimed at police officers
- Pedestrians and cyclists describe car on wrong side of road then swerving deliberately to hit them at 50mph
- 'Terrorism act' cordon set up in all directions from Trafalgar Square, Westminster Bridge and Lambeth Bridge
- Crash came 17 months after Khalid Masood killed 5 on Westminster Bridge before murdering PC Keith Palmer
- Security beefed up since then and Ford Fiesta was stopped by new barrier able to withstand speeding lorry
This is the horrifying moment a Ford Fiesta swerved to hit at least 15 cyclists and pedestrians at up to 50mph before narrowly missing two police officers as it ploughed into barriers outside the Houses of Parliament today.
The terror suspect, a black man in his late twenties now refusing to co-operate with police, was pulled from the smoking silver Ford Fiesta by around a dozen armed officers who had their rifles trained on him.
A 'loud bang' followed by screams echoed around Parliament Square at 7.30am this morning and CCTV uncovered by the BBC shows the car swerve the wrong way down the road and 'intentionally' veer through crowds before smashing into a security barrier.
Two uniformed police officers manning the checkpoint designed to withstand a high speed lorry attack are shown diving away and detectives are investigating if they were the true targets of the suspected terror attack.
Three people were injured and one female cyclist is being treated for serious but not life-threatening injuries, which MailOnline understands is a broken hip.
Geoffrey Woodman, 27, from Battersea, heard a 'loud screech' and told MailOnline: 'It [the Ford Fiesta] cut out in front of us through the red light on the wrong side of the road. It swerved left and hit the lady two bikes to my left. Its windscreen hit her quite hard. One slight turn of the wheel and it would have taken me out. It was chaos'.
Cyclists abandoned their bikes after the collision with one being treated for injuries in the middle of the road as terror came to London's streets again
Armed officers swamp a crumpled silver car after a rush hour crash at Westminster today that left two pedestrians injured
The man in the left of the picture was arrested at the scene where two people were injured at just after 7.30am yesterday
CCTV footage of the car unearthed by the BBC shows the car on the wrong side of the road then swerve left, hitting cyclists and pedestrians before hitting a barrier
This is the scene in the minutes after the crash and shows the vehicle was within the network of barriers outside Parliament. These were increased after the terror attack there last year
This is the location of the barrier crash - just around the corner from where Khalid Masood killed six people in March 2017
Scotland Yard said the crash is being treated as a 'terrorist incident' and counter-terror chief Neil Basu said the suspect was not known to police or MI5.
Mr Basu also said that he appears to have been working alone and there is 'no intelligence at this time of further danger' to Londoners following the Westminster car attack.
He said: 'It appears to be a deliberate act. We are treating it as a terrorist incident. The man is in his late 20s and he's been arrested on suspicion of terrorism offences and has been taken to a South London police station where he remains in custody.
'Our priority now is to formally establish the identity of the suspect and establish his motivation if we can. He is not currently co-operating'.
Parliament is closed today but most MPs are away because it is during the summer recess, and a huge 'Terror cordon' stretching nearly a mile around Parliament Square is in place.
Today's crash came 17 months after Khalid Masood drove into pedestrians on Westminster Bridge - killing five - before stabbing to death PC Keith Palmer at the gates of Parliament.
Ewalina Ochab saw the incident and said: 'I think it looked intentional - the car drove at speed and towards the barriers', while Jason Williams said: 'I saw at least 10 people lying down. I had to run for my life', and Barry Williams said: 'One of the cyclists jumped up and ran after the driver'.
The moment the suspect was arrested was caught on camera and witness, Donovan, told LBC: 'Six four-by-fours shot past us and armed police jumped out and over the barrier. They were just dragging him out, but they were pointing guns in the car'.
As a suspected terrorist appears to have launched a carborne attack in London again, it also emerged:
- Ford Fiesta bought two months ago crashes into cyclists, pedestrians and then barriers outside Houses of Parliament at 7.30am;
- Armed officers seen leaping over barriers and training rifles on the car before dragging suspect from the car. He was in vehicle alone and there were no weapons, bombs or chemicals found;
- Suspect was arrested on suspicion of terror offences and taken to south London police station. He is refusing to co-operate;
- Detectives investigate if attack was indiscriminate or aimed at two police officers manning checkpoint;
- Two people are treated in St Thomas' Hospital but several more were also treated at the scene and say car 'deliberately' swerved towards them;
- Giant 'terror cordon' surrounds Houses of Parliament but most MPs are away because of summer recess;
- Attack came 17 months after Khalid Masood's Westminster rampage killed six and tested new barriers installed to stop similar carnage happening again;
- Donald Trump wakes up and tweets the Westminster terror incident and said: 'These animals are crazy and must be dealt with through toughness and strength!'
A meeting of the Government's emergency cobra committee will be held at 2pm today - but will it will be a meeting of officials, with no cabinet ministers expected to attend at the moment, No 10 said.
Prime Minister Theresa May is currently away in Switzerland on the second leg of her summer holiday but she said her thoughts were with those injured in the Westminster car crash and thanked the emergency services for their 'immediate and courageous' response.
Home Secretary Sajid Javid said: 'Huge thanks to our emergency services for their rapid reaction to incident in Westminster this morning. My thoughts are with those injured.'
Labour leader Jeremy Corbyn tweeted: 'My thoughts are with those hurt and injured outside Parliament this morning in what is being treated as a terrorist incident.
'Our thanks go to our emergency services who responded immediately. Their bravery keeps us safe day in, day out.'
On arrival at Parliament, Boris Johnson said: 'If it is indeed confirmed to be a terror incident, then it's very sad and very troubling indeed.
'Hopefully people will be able to go about their normal days as soon as possible.'
More than 200 officers have been sent to Westminster who moved members of the public away from the area in every direction.
Specialist officers and sniffer dogs 'sanitised' the scene - a term used when checking for a bomb or dangerous chemicals.
Witnesses said officers initially stood back and said it seemed as if they were concerned that the car may have contained a bomb.
Witnesses are still being interviewed by the police and many described seeing the driver veer towards people hitting between 10 and 15 people
Witness Jason Williams told ITV's Good Morning Britain that the incident was 'very, very scary', adding that he was feeling 'very anxious'.
He said: 'Basically I've seen a man driving a vehicle, and he's gone into one of the bollards. There was a loud bang.
'Straight away I thought 'Oh no, this is another terrorist attack'. So I've just started to run and the police were saying 'get out, get out of the area'.
'It looked deliberate. It didn't look like an accident. How do you do that by accident? It was a loud bang.
'I was very surprised (the police didn't go in straight away). They seemed to be standing back. They were obviously a bit wary, like what's going to happen next?
'I don't know if it was a tip-off, a warning, that this was a bomb. There seems to be maybe about 200 police here now, and it's all happened very quickly in the space of half an hour.
'I have seen people on the ground, lying on the road. I don't know if they have actually been hit by the vehicle or not. I saw at least 10 people lying down. I had to run for my life.'
Bus driver Victor Ogbomo, 49, was driving passengers past the front of Westminster when he saw the crash.
He said: 'All I saw was the smoke coming out of a vehicle, a silver vehicle ... I just stopped the bus.
'The police said we have to move back, then in less than five minutes the response team came. They went to the vehicle, so we had to push back. I saw the car in the barrier'.
Scotland Yard put out this statement this morning confirming an incident had taken place but said it was too early to tell if it was terror-related. Two hours later they said they were keeping 'open mind' by counter-terror police took over the case
Police have closed off Westminster Bridge (pictured) and all major roads leading to Parliament Square in the aftermath of the crash
embers of the public and press have been moved back further from the area as police put up a 'Terrorism Act cordon', according to an officer at the scene
Cyclist James Maker, 30, of Chelmsford, Essex, passed the scene in Westminster within minutes of the crash to see a woman injured on the floor and the car crashed into the barrier.
'I looked to the right-hand side and there was a cyclist on the floor, clearly injured,' he said.
'It was a woman, they were clearly quite injured, they weren't moving and they were in the recovery position.'
Fellow cyclists were helping her, he said, adding: 'There were a couple of cyclists who had clearly been involved who were sitting on the floor and perhaps had minor injuries.
'I must be honest, I've got a young son and a wife and my initial reaction was as long as paramedics were seeing to the woman, I wanted to get away from the incident.'
The head of policy at the County Councils Network then saw the silver Ford Fiesta crashed into the barrier outside Westminster Palace.
'You've got to have an intent to go for that barrier, there's so many security barriers and the way the car ended up in that part it would appear deliberate to me. It's gone up the driveway and hit the actual barrier thinking perhaps it would open,' he said.
A huge police cordon continued to expand this morning, stretching from Parliament Square to St James's Park.
A number of high-profile buildings are now falling within the cordon including the Supreme Court, HMRC and the Treasury.
The usually busy roads have been taped off with police officers on guard at every road. Among the roads closed off include Old Queen Street and Birdcage Walk.
Dozens of confused civil servants were unable to get to work without a police escort. Officers were assisting workers to and from the buildings.
Westminster Bridge and Tube station were both closed and the length of Whitehall is completely shut off to traffic, with the cordon extended up to where the road meets Trafalgar Square.
A police officer said: 'It is such a big cordon it's chaos at the moment but the public's safety is of course paramount.'
Police evacuated dozens of people and cars from St James's Park as they extend their cordon around a vehicle which crashed earlier today.
The driver of a van asked a policeman at the scene if it was a terror attack. The officer replied: 'It's looking that way.'
British Transport Police (BTP) said it would be putting extra officers on patrols in England, Scotland and Wales on Tuesday afternoon and into the evening following the Westminster terror attack.
Superintendent Chris Horton from BTP said: 'We know incidents such as this are likely to cause concern, so our officers will be highly visible both on board trains and at stations.
'We are there to reassure the travelling public, so please don't be alarmed if you see our officers, including firearms officers, on your journey.'
Holidaymaker Justin Davey, 48, was going on a morning jog through St James's Park with his family when they were suddenly told to leave the park.
He told MailOnline: 'Police just shouted, 'get out of the park'.'
Mr Davey admitted that it was a scary experience, with the family having only just arrived from Mexico for their holiday to London.
He said: 'It's not what to see when you're on holiday - helicopters flying around and this type of thing. It is quite scary. The police are very well organised though.'
Armed officers surrounded Parliament Square after this morning's rush hour crash
A witness, who gave his name only as James, described how he had been cycling past Parliament shortly after the incident happened.
'There was a cyclist clearly injured on the floor, there was a number of cyclists off their bikes. As I went past, an ambulance turned up,' he told the BBC Radio 4 Today programme.
'As I carried on down I was told to get off my bike by a police officer. He said there'd been an incident. As I looked up as I got off my bike, I saw there was a car in the barrier.
'My natural reaction was to get away from the scene.'
Two people were treated at the scene in Westminster for injuries that are not thought to be serious, London Ambulance Service said.
Assistant Director of Operations Peter Rhodes said: 'We were called at 7.40am today to reports of an incident on St Margaret Street, SW1.
'We sent a number of resources to the scene including three ambulance crews, responders in cars and an incident response officer.
'We have treated two people at the scene for injuries that are not believed to be serious and have taken them to hospital.'
The police response suggests they will be considering if a terror attack was a motive.
Security expert Chris Phillips told ITV's Good Morning Britain: 'Clearly this vehicle has crashed into the barriers. The barriers are there to protect the building and the people inside. They've been there a long time actually.
'I think one of the biggest issues for police officers when they approached the vehicle was could it explode. So the fact that the officers have got in there, got the man out and are dealing with it is a really good sign.
'This could well be some form of an attack that's not quite worked properly for the attacker. The whole point of those barriers is they are to stop and slow down any vehicles getting close to the building and people inside.
'So if you tried to crash through those barriers, it just wouldn't work. They're strong enough to stop a vehicle at 50mph. So the fact that the officers are taking it very seriously obviously means that they've got some concerns.
'And of course they also now want to search the vehicle to make sure there's nothing inside it that could cause anyone damage.'
The cordon has been extended past the Cenotaph on Whitehall - a five-minute walk from the scene at Old Palace Yard.
How today's crash comes 17 months after Westminster Bridge attack that left five people dead and 50 injured
- Muslim convert Khalid Masood plouged car into crowds on bridge in March 2017
- 52-year-old abandoned car then stabbed and killed unarmed PC Keith Palmer
- Parliament's security barriers of steel and concrete were extended after attack
Today's crash outside the Houses of Parliament comes 17 months after the Westminster Bridge attack which left five people dead and 50 injured.
Khalid Masood, 52, ploughed a car into crowds on the bridge in London in March 2017, in the first of five terrorist attacks on Britain last year.
Masood abandoned his car then stabbed and killed unarmed PC Keith Palmer before he was shot by armed police in a courtyard outside Parliament.
Khalid Masood (left) ploughed a car into crowds on Westminster Bridge in March 2017, before abandoning his vehicle then stabbing and killing unarmed PC Keith Palmer (right)
Parliament is surrounded with security barriers of steel and concrete, which were extended after last year's attack to provide further protection.
Security expert Chris Phillips said: 'The whole point of those barriers is they are to stop and slow down any vehicles getting close to the building and people inside.'
On ITV's Good Morning Britain today, he added: 'If you tried to crash through those barriers, it just wouldn't work. They're strong enough to stop a vehicle at 50mph.'
Masood was a Muslim convert with a history of violent crime - and unleashed his rampage more than a decade after turning his back on his family in Birmingham.
The scene on Westminster Bridge in London following the terrorist attack in March 2017
The father-of-three, born Adrian Elms in Kent, changed his name after amassing a series of criminal convictions and spent years living in a series of terrorist hotbeds.
After Masood's rampage, there were four further attacks - at the Manchester Arena, London Bridge, Finsbury Park in North London and Parsons Green in West London.
Last week, a Muslim convert admitted plotting to kill more than 100 people by driving a truck into pedestrians on Oxford Street in the capital's West End.
Britain is on its second highest threat level of 'severe', meaning an attack by militants is 'highly likely'. Scotland Yard's counter-terrorism unit is leading today's probe.
Police patrols are stepped up across Britain and Parliament put on lockdown after terror attack - as Met chief insists there is 'no intelligence of further danger' to Londoners
- British Transport Police will have extra officers this afternoon and evening
- Public will see them on trains and at stations in England, Scotland and Wales
- Workers trapped inside Parliament Square buildings told to hide in basements
- Car collided with cyclists and pedestrians before crashing into security barriers
Police patrols were today stepped up across Britain after a car collided with cyclists and pedestrians before crashing into security barriers in Westminster.
British Transport Police said commuters will see extra officers this afternoon and evening on trains and at stations around England, Scotland and Wales.
And workers trapped inside Parliament Square buildings were told to hide in basements and stay away from windows after the crash at about 7.40am today.
British Transport Police said commuters will see more of its officers this afternoon (file picture)
Metropolitan Police Assistant Commissioner Neil Basu said there was 'no intelligence at this time of further danger' to Londoners following the attack.
But he added: 'Detectives from the counter-terrorism command are making various other urgent enquiries to ensure that there is no outstanding risk to the public.'
Scott Hawkins, who works in IT support for the Royal Institute of Chartered Surveyors in Westminster, was told to hide in the basement of his building by police.
He did not know when they would be allowed out, saying: 'Police advised us to stay in the basement of our building as being near windows is a security risk right now.
Westminster station on the London Underground's Circle, District and Jubilee lines is closed
'I was walking through Parliament Square just before the crash so I missed the actual event. The police have put our building on lockdown.'
BTP said anybody with concerns following the incident outside the Houses of Parliament can speak to a member of rail staff or a police officer.
Superintendent Chris Horton said: 'We know incidents such as this are likely to cause concern, so our officers will be highly visible both on board trains and at stations.
'We are there to reassure the travelling public so please don't be alarmed if you see our officers, including firearms officers, on your journey.'
Metropolitan Police Assistant Commissioner Neil Basu said today (pictured) that there was 'no intelligence at this time of further danger' to Londoners following the attack
Surrounding roads including Westminster Bridge, Abingdon Street and Whitehall all closed today, along with Westminster station on the London Underground.
On arrival at Parliament, former foreign secretary Boris Johnson said: 'Hopefully people will be able to go about their normal days as soon as possible.'
The driver, who is in his late 20s, has been arrested on suspicion of terror offences and is being held in custody at a police station in South London.
Armed officers swarmed the scene following the suspected terror attack and the man, wearing a black puffer jacket, was led away in handcuffs from a Ford Fiesta.
'I heard a car screeching... it swerved left and hit the lady two bikes to my left': Cyclists are left sprawled in the road next to their mangled bikes after car smashes into them in Parliament 'terror attack'
- Video footage showed paramedics attending to cyclists near Parliament Square
- Worried bystanders seen looking on as cyclists sat on St Margaret Street today
- One cyclist told how he cheated death as the speeding car ploughed past him
Injured cyclists were sprawled in the road next to their mangled bikes after a car crashed into security barriers outside the Houses of Parliament today.
Video footage showed paramedics attending to the cyclists next to Parliament Square in Westminster following the smash that saw the area put into lockdown.
Worried bystanders could be seen looking on as the cyclists sat on St Margaret Street waiting for help following the crash that has injured at least two people.
One cyclist, a management consultant, told MailOnline how he cheated death as the speeding car ploughed past him - knocking down the cyclist next to him.
Geoffrey Woodman, 27, from Battersea, was cycling to work when he heard a 'loud screech' and the car slammed into the woman on the bicycle next to him.
'I felt very shocked,' he said. 'It was a very odd experience to have. It happens more and more but you never expect it to be you. It was so close.
'One slight turn of the wheel and it would have taken me out. I had pulled up to the red light by Parliament Square and put my foot down.
After about ten seconds I heard a car screeching over the bridge. It was obscured behind a van at first but then it cut out in front of us through the red light on the wrong side of the road.
'It swerved left and hit the lady two bikes to my left. It was going about 40 to 50mph. Its windscreen hit her quite hard as she was trying to jump off to the left.
'I'm jumping off to the right and once it had gone past I looked to the left and saw her on the ground with bikes everywhere. It was chaos.
'She was a middle-aged lady, about 40 to 45 years old, about 5ft 5in tall. She was wearing cycling gear, grey trousers, a bright top and a helmet.
Injured cyclists are sprawled in the road next to their mangled bikes after the crash today
'She was on the ground talking to about ten other cyclists who were clustered around her. She was in a lot of distress.
'There was no blood but I'd be surprised if there were no broken bones. I think she may have broken her hip.'
Another witness, Barry Williams, told BBC News that the car was 'heading towards cyclists' on the wrong side of the road as they waited for the lights to change.
He said: 'He hit the cyclist and then swerved over towards the safety barrier... and accelerated and hit it at quite high speed.
Police investigate after the car crashed into security barriers outside the Houses of Parliament
'I don't know whether he meant to hit the cyclist, they may just have been in the way, but he accelerated hard towards the barrier.'
Armed officers swarmed the scene this morning – and a man, wearing a black puffer jacket, was surrounded by officers and led away in handcuffs from a Ford.
Two people were taken to hospital after being treated at the scene for injuries, which are not believed to be serious, the London Ambulance Service said.