THE occupants of a green Peugeot could hold the key to solving a serious sexual assault in Oxfordshire, police said this afternoon.

Police investigating the attack in Crowmarsh Gifford, near Wallingford, are appealing for the occupants of the car to come forward.

A 21-year-old woman was assaulted as she walked down an alleyway near the recreation ground last Sunday.

She told police she saw a small, green Peugeot parked near Howberry Farm, which drove off before she could approach them.

Det Con Darren Cartwright, of Didcot CID, said: "House-to-house enquiries have been carried out and our investigations are still ongoing.

"It is vital we speak to the occupants of this car. They are not being treated as suspects, but they were in the area at the time of the attack and could have seen the offender running off."

Anyone with information should call police on 08458 505505 or Crimestoppers anonymously on 0800 555111.