Two horses ran loose on the M25 on Saturday (8 August) after a trailer overturned.
The accident occurred on the anticlockwise carriageway at Junction 9 at Leatherhead and caused traffic chaos.
The horses had been travelling inside the trailer and escaped when it fell onto its side.
Surrey Police arrived at 9.40am and one of the horses was caught close to the trailer.
The second horse was captured almost a mile away after running loose up the carriageway.
Traffic was at a standstill as two lanes were closed between Junction 9 and Junction 8 and the motorway was blocked between Junction 8 and Junction 7.
The owners of the horses, who were travelling in the 4×4 that had been pulling the trailer, were not hurt. The horses were treated by vets.
“Surrey Police was called to the M25 at Junction 9 on Saturday 8 August at 9.40am following reports that a trailer, being towed by a 4×4 had overturned,” said a police spokesman.
“No one in the vehicle was injured. The two horses in the trailer escaped, one was brought under control near the vehicle and the second nearly a mile along the M25 thanks to help from members of the public.
“They were both assessed by a two vets and were transported to safety in two separate horseboxes, which had volunteered by passing members of the public.”
A witness, who was travelling on the motorway at the time, told local press that the crash sent “a huge cloud of dust in the air” and “a brown and white horse [was] half hanging out the back [of the trailer].
“About a quarter mile further on I was shocked to see a large brown horse galloping down lane three just before Junction 8,” they added.
Anyone who witnessed the incident is asked to call Surrey Police on 101 and quote reference number P15206849.