A herd of cows brought traffic to a standstill on one of the country's busiest motorways when a trailer was involved in a crash.
The cows were released on to the carriageway between junctions 14 and 15 of the M1 while emergency services tried to round up the cattle.
A Thames Valley Police spokeswoman said nobody was injured in the crash, but they could not let traffic pass until all the cows had been retrieved.
She said: "A vehicle towing a trailer with livestock has had an accident somewhere near the Newport Pagnell services. The trailer has gone over and some of the livestock has escaped.
She said most of the livestock had been secured almost immediately, but two stray cows were still loose on the motorway.
The road was not officially closed, but police stopped traffic in both directions until they could get the animals off the road. "The farmer that was driving the vehicle had a minor injury but it's nothing serious," the spokeswoman added.
Traffic was released on both carriageways after about an hour-and-a-half when the cows were all removed from the motorway.
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