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Traffic built up along the A258, Dover Deal Road this morning for more than an hour.
This followed a collision between a blue Mercedes and what is believed to be a grey sports car.
Motorists travelling in both directions were grounded to a halt while the scene was monitored by police and ambulance services.
Police spokesman, Jon Green, said: "Kent Police was called at 8.30am.
"Two cars involved in collision on the A258 near the turning for St Margarets.
"[There were] two casualties – a female with whiplash and an elderly man with back injury."
The scene is currently in the process of being cleared, but delays are to be expected.