Vehicles were first stopped following initial reports at around 10.30am, and drivers were held a second time a short while later after a second group of cows were spotted alongside the carriageway.
Around 35 cows escaped onto the M25 in total, with one group making it as far as Clacket Lane Services, a mile away from where they had escaped at Flower Farm.
They were then safely herded back.
Emily Davies, part of the Flower Farm team in Godstone, was one of the first to the scene – and began trying to herd the cows back to the field.
The animals are believed to have escaped through some fencing which was damaged overnight.
Speaking to SurreyLive, she described the unusual and comedic incident.
She said: “We were in the field taking pictures as it was such nice day.
“We noticed that the cows had all grouped in one part of the field under some trees, which they sometimes do, but Patrick Deeley, the farmer, noticed a hole in the fencing.
“It was lucky we were in the field when it happened.
“As soon as he noticed the hole, he went to check as and found that one of the cows had decided to wander through the hole.
“When one cow goes, they all go.
“They will all follow as they work in a herd. The first got out, then another eight followed it.
“After that there was only two of us – we had to get the cows back in the field while stopping any others from getting out.
“We called a neighbour who came round to help. However, there was no way to stop the other 27 once they wanted to get out, so there were 35 cows along the M25.
“We followed them down the bank of the M25 – at this point there wads four of us from the farm and two neighbours.
“All the traffic had to be stopped. He tried to herd them back towards me and back onto the farm.
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