Police are appealing for witnesses after two cars collided as they tried to avoid a tree in the road.
A blue Volkswagen Golf and a blue Saab 93 crashed on the A24 at Warnham on Christmas Eve.
A tree had been cut down and was lying in the northbound carriageway when the drivers tried to avoid it at about 6.30am.
The 34-year-old woman from Crawley who was driving the Volkswagen suffered an injured knee and whiplash.
The 58-year-old man from Dorking who was driving the Saab suffered cuts and whiplash. His 47-year-old female passenger, also from Dorking, suffered a fractured breastbone.
PC Ben Henwood said: “I need to speak to anyone who saw the tree in the road before the collision or saw the cars crash but who has not yet come forward.
“I also need to find out who cut the tree down. If you know who was responsible or when it happened, please contact me.”
Anyone with information should call 101 quoting Operation Budapest or email firstname.lastname@example.org.