BreakingLondon Ambulance Service says four injured
We've just been speaking to the London Ambulance Service, who tell us four people are now confirmed injured.
What we know, and what we don't
What we know:
London Ambulance Service was called to reports of someone being thrown from a horse on Buckingham Palace Road at 08.25 this morning
Shortly afterwards, Metropolitan Police say they know there are a number of horses on the loose
Two horses - one black and one white - are filmed running along Aldwych
London Fire Brigade says one horse has been secured and taken to a safe area
City of London police say they have contained two horses near Limehouse - approximately five miles from Buckingham Palace Road
What we don't know:
How many horses were originally involved
How many horses are still on the loose in London
How many people are injured
What injuries the horses have
Where the horses came from
WATCH: Motorist records horses running through street
Video content
Video caption: Watch: Motorist videos the horses running through LondonWatch: Motorist videos the horses running through London
Here's some footage we received that was posted on X. Two of the horses, one covered in a red substance which may be blood, were caught running past traffic on a London street.
More detail on the horses' route
Tracy, 20, from London, said she saw a black horse and a white horse - which appeared to be covered with blood - running from Tower Bridge towards Limehouse Tunnel. She said an unmarked Range Rover was following them.
It's unclear at this point whether these are the two horses that the police managed to contain in the Limehouse area.
Where London keeps its horses
There are reports that the horses belong to the Household Cavalry - one of the most senior regiments in the British Army.
The mounted regiment are often seen at state and public duties in London - at events such as the King's coronation.
The horses are stabled in Hyde Park Barracks, in Knightsbridge - an upmarket area of central London.
The BBC has contacted Buckingham Palace for comment.
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The Household Cavalry can often been seen in central London - here they are on The MallImage caption: The Household Cavalry can often been seen in central London - here they are on The Mall
BreakingTwo escaped horses now contained
City of London Police says it has managed to contain two of the runaway horses. They found them near Limehouse.
As a reminder - it's not known exactly how many horses are on the loose, but the Metropolitan Police earlier said "a number" were running through London.
Horses seen running past Post Office inquiry site
PA MediaCopyright: PA Media
While we bring you the latest updates on the horses movements, our colleagues covering the Post Office inquiry point out that they just charged past Aldwych House - where the inquiry is taking place - on their way through central London.
Ambulance service says person was thrown from horse near Buckingham Palace
The London Ambulance Service has just released a statement:
“We were called at 8:25am today (April 24) to reports of a person being thrown from a horse on Buckingham Palace Road, SW1W.
“We sent resources to the scene including ambulance crews, a paramedic in a fast response car, and an incident response officer.
“Our first paramedic was on the scene in five minutes.
“The incident is still ongoing and we are working with our emergency services partners.”
BBC reporter sees 'blood on the floor'
BBC reporter Tony Bonsignore was on the scene. He said he saw someone receiving treatment from paramedics behind a blue cloth before they were taken away in an ambulance.
Bonsignore was on a bus near Victoria Station when the incident unfolded, and said: "It's unclear at the moment exactly what happened.
"Everything came to a standstill. Right behind us a horse hit a tour bus, and you can see where it smashed the windscreen.
"There was blood on the floor as well."
He added: "I saw a horse that was being led away, it wasn't clear whether that horse had been injured.
"A sort of taxi van is pretty badly smashed up on the side, again with some blood on the floor and evidence of where horses were behind it."
In pictures: Horses run through London's streets
PA MediaCopyright: PA Media
PA MediaCopyright: PA Media
PA MediaCopyright: PA Media
At least one person injured
One person has been injured after the horses are believed to have collided with traffic.
London Fire Brigade says the injured person was treated by ambulance crews, and one horse has been "secured" and taken to a safe area.
It's not clear how many horses were involved in the incident and how many are still running loose.
Police working with Army to find them
The animals, wearing saddles and bridles, were seen running in the road near Aldwych on Wednesday morning.
Pictures and videos of the horses were shared on social media, one of which showed a black 4x4 with blue lights following the animals.
A Metropolitan Police spokesman said: "We are aware of a number of horses on the loose in central London.
"We are working with colleagues in the Army to locate them.”
Watch: Horses run through central London
Video content
Video caption: Runaway horses filmed racing through central LondonRunaway horses filmed racing through central London
Hello and welcome
Two riderless horses - one white and one black - are running through the streets of central London this morning.
They ran along the Strand at around 8:30am, with one of them believed to have collided with a black cab. Reports suggest they continued towards Tower Bridge.
The white horse appeared to be covered in a red liquid - it wasn't clear if that was paint, blood or something else.
Live Reporting
Edited by Siobhan Toman
All times stated are UK
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BreakingLondon Ambulance Service says four injured
We've just been speaking to the London Ambulance Service, who tell us four people are now confirmed injured.
What we know, and what we don't
What we know:
What we don't know:
WATCH: Motorist records horses running through street
Video content
Here's some footage we received that was posted on X. Two of the horses, one covered in a red substance which may be blood, were caught running past traffic on a London street.
More detail on the horses' route
Tracy, 20, from London, said she saw a black horse and a white horse - which appeared to be covered with blood - running from Tower Bridge towards Limehouse Tunnel. She said an unmarked Range Rover was following them.
It's unclear at this point whether these are the two horses that the police managed to contain in the Limehouse area.
Where London keeps its horses
There are reports that the horses belong to the Household Cavalry - one of the most senior regiments in the British Army.
The mounted regiment are often seen at state and public duties in London - at events such as the King's coronation.
The horses are stabled in Hyde Park Barracks, in Knightsbridge - an upmarket area of central London.
The BBC has contacted Buckingham Palace for comment.
BreakingTwo escaped horses now contained
City of London Police says it has managed to contain two of the runaway horses. They found them near Limehouse.
As a reminder - it's not known exactly how many horses are on the loose, but the Metropolitan Police earlier said "a number" were running through London.
Horses seen running past Post Office inquiry site
While we bring you the latest updates on the horses movements, our colleagues covering the Post Office inquiry point out that they just charged past Aldwych House - where the inquiry is taking place - on their way through central London.
You can find more details here.
Ambulance service says person was thrown from horse near Buckingham Palace
The London Ambulance Service has just released a statement:
“We were called at 8:25am today (April 24) to reports of a person being thrown from a horse on Buckingham Palace Road, SW1W.
“We sent resources to the scene including ambulance crews, a paramedic in a fast response car, and an incident response officer.
“Our first paramedic was on the scene in five minutes.
“The incident is still ongoing and we are working with our emergency services partners.”
BBC reporter sees 'blood on the floor'
BBC reporter Tony Bonsignore was on the scene. He said he saw someone receiving treatment from paramedics behind a blue cloth before they were taken away in an ambulance.
Bonsignore was on a bus near Victoria Station when the incident unfolded, and said: "It's unclear at the moment exactly what happened.
"Everything came to a standstill. Right behind us a horse hit a tour bus, and you can see where it smashed the windscreen.
"There was blood on the floor as well."
He added: "I saw a horse that was being led away, it wasn't clear whether that horse had been injured.
"A sort of taxi van is pretty badly smashed up on the side, again with some blood on the floor and evidence of where horses were behind it."
In pictures: Horses run through London's streets
At least one person injured
One person has been injured after the horses are believed to have collided with traffic.
London Fire Brigade says the injured person was treated by ambulance crews, and one horse has been "secured" and taken to a safe area.
It's not clear how many horses were involved in the incident and how many are still running loose.
Police working with Army to find them
The animals, wearing saddles and bridles, were seen running in the road near Aldwych on Wednesday morning.
Pictures and videos of the horses were shared on social media, one of which showed a black 4x4 with blue lights following the animals.
A Metropolitan Police spokesman said: "We are aware of a number of horses on the loose in central London.
"We are working with colleagues in the Army to locate them.”
Watch: Horses run through central London
Video content
Hello and welcome
Two riderless horses - one white and one black - are running through the streets of central London this morning.
They ran along the Strand at around 8:30am, with one of them believed to have collided with a black cab. Reports suggest they continued towards Tower Bridge.
The white horse appeared to be covered in a red liquid - it wasn't clear if that was paint, blood or something else.
Stay with us as we bring you the latest.