
One man is dead and residents have been evacuated after a speeding car smashed through railings into the basement of a multi-million pound mansion in Kensington as witnesses described hearing a trapped passenger screaming for two hours.

Dramatic footage shows the front of the vehicle sticking out of the ground in the affluent area while debris is littered across the road which has been cordoned off for the rest of today.

The car smashed through railings just after 3am this morning before ramming into the building - which has completely cracked the brick work, causing the entire block to be evacuated amid fears of a collapse.

Two brothers were said to have been trapped in the car, one managed to free himself from the wreckage but another was stuck inside the car for two hours.

Speaking to MailOnline at the scene this afternoon, distressed residents told how they heard his screams of pain for hours as he was crushed in the car as his helpless sibling looked on.

Bianca Simpson, 45, said: 'One was hysterically crying and screaming, saying, 'That's my brother in there, that's my brother.''

The car smashed through railings before ramming into the building - which appears to have a crack in the brick work

Officers are said to have seen the vehicle being driven at speed shortly before the crash and signalled for it to stop but it 'sped away out of sight'

Two men were left trapped inside while the other two managed to free themselves from the wreckage

One witness tweeted: 'Must of just witnessed the worst crash I've ever seen on Cromwell Road and Warwick Road'

All four of those in the car - who are believed to be in their 20s and are thought to be from London - were taken to hospital but one of them died later that morning

Ms Simpson who lives inside the house described to MailOnline her horror as she listened to one of the men trapped inside the car screaming for hours before he was rescued.

She said: 'The guy in the back died after being stuck two and a half hours - we were just listening to him screaming.

'First of all he was like 'get me out get me out' and crying loud in pain, then he was screaming, then there was just deep moaning.

'The moaning was getting less and less as he was getting weaker and weaker. When he came out he was still conscious and talking but he died a few minutes later.

'There's a hole in the wall. The car's come around the corner speeding, hit a lamppost and it must have spun come into the basement back-end first.

'It hit the ground level window and wall first before it's come down into my basement and taken railings from two sides of the house.

Speaking at the scene of the incident hours later, she said: 'I'm still traumatised. I haven't slept yet and I wonder what's going to come into my mind, I wonder if I'll hear that guy screaming.'

One resident who lives inside the house described to MailOnline her horror as she listened to one of the men trapped inside the car screaming for hours before he was rescued

Dramatic pictures show the vehicle sticking out of the side of a road in Kensington

One witness tweeted: 'Must of just witnessed the worst crash I've ever seen on Cromwell Road and Warwick Road'

Debris can be seen littered across the street with police cordons in place

She said: 'One of them jumped out of the car and started screaming. The man trapped was groaning hard in pain. It became like a moan because he didn't have the strength anymore. It's devastating for their family.'

Police said they had pursued the car after seeing it speeding along Talgarth Road shortly before the smash. Officers signalled for the car to stop but it sped off before crashing into the building.

Another man who lives at the house told MailOnline: 'I thought the tree had fallen down.

'I saw two guys leaving the car and the police were there. I saw them chasing them.

'We knew he'd died.'

He added: 'I looked out the window and saw the smoke.

'[The police] were there straight away because they were chasing them.

'Listening to the guy screaming for three hours - that is the bad experience. He was touching my kitchen window and I could see him next to me.'

One resident who lives inside the house described to MailOnline her horror as she listened to one of the men trapped inside the car screaming for hours before he was rescued

A second man remains in a critical condition, according to police - while the other two have been arrested in connection with the incident

Ms Simpson added: 'The car crashed into my basement and my kitchen - it's total devastation.

'I've had to come back for something but they won't allow me in until the car's moved.

'I heard the crash and felt the house shake and came rushing to the lounge - I could see the car through my kitchen window in my basement.

'The people inside the car were screaming and trying to get out.

'I went to the lounge to open the window and a police officer was already here telling us to get back inside because of petrol - but I wanted to come outside and help.'

All four of those in the car - who are believed to be in their 20s and are thought to be from London - were taken to hospital but one of them died later that morning.

A second man remains in a critical condition, according to police - while the other two have been arrested in connection with the incident.

Transport for London earlier said the A4 was shut eastbound between Hammersmith flyover and Earl's Court Road and westbound from Earl's Court Road to Warwick Road. A police cordon is pictured

The Metropolitan Police said in a statement: 'A man has died following a collision in Kensington, shortly after police officers signalled for a car to stop'

A large cordon was put in place following the horror crash

Scotland Yard added: 'As is routine in such cases, the Directorate of Professional Standards and the Independent Police Complaints Commission have been informed'

One witness tweeted: 'Must of just witnessed the worst crash I've ever seen on Cromwell Road and Warwick Road.'

A local resident said she 'heard a massive crash' at approximately 2am outside her flat.

She added: 'The whole road is blocked off so if you are thinking of coming into the area keep checking before you venture out.'

The Metropolitan Police said in a statement: 'A man has died following a collision in Kensington, shortly after police officers signalled for a car to stop.

'At approximately 03:10hrs on Saturday, 10 June, a car was in collision with a building in West Cromwell Road, W14.

'Officers were on scene shortly after the collision occurred. The car was wedged between the side of the building and steps leading to a basement.

'The London Ambulance Service and the London Fire Brigade (LFB) were called to the scene.'

Scotland Yard added: 'As is routine in such cases, the Directorate of Professional Standards and the Independent Police Complaints Commission have been informed.

'At this early stage it is understood that the car was seen by officers being driven at speed on Talgarth Road shortly before the collision.

'The police car followed the vehicle and signalled for it to stop, but it sped away out of sight of the officers.

'When next seen by the officers, it had been involved in the collision in West Cromwell Road. Enquires continue to establish the full circumstances.'