The vehicle overturned on Tuesday afternoon (June 28), blocking the motorway at J8 A217 Reigate.
Images from traffic cameras showed emergency services attending the scene at around midday.
Firefighters blocked all four lanes of the motorway, bringing traffic to a standstill as heavy queues built up.
The incident had already caused queueing halfway back to J9 Leatherhead by noon.
BBC Radio London Travel tweeted: “The anticlockwise #M25 is blocked at J8 A217 Reigate, as a lorry has overturned and it’s already queueing halfway back to J9 Leatherhead”.
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