Drivers were brought to a standstill on the M25 this morning, after a group of horses got loose on the carriageway in Hertfordshire.
Astonished commuters snapped these pictures, as police chased the animals to get them out of the road.
The horses have now been removed but there are still severe delays on the anticlockwise carriageway between junctions 22 and 27.
More top news
Unions have warned of a crisis on the Piccadilly Line after fresh disruption for travellers.
George Osborne told MPs London would shoulder a large part of his 37% reduction in transport funding.
The prison was originally opened in 1852 as a mixed prison before becoming the first female-only local prison in England in 1902.