Willow Du Plooy was last seen on Friday afternoon.
Police, looking for a woman who's been missing from Banbury since Friday, have found a body at Cherwell Valley Services near Bicester.
They believe it to be Willow Du Plooy, although, the body hasn't been formally identified yet.
It was discovered last night.
21-year-old Willow was reported missing to Thames Valley Police yesterday.
Investigating officer Detective Inspector Krista Thompson, said: “Very sadly, following a search, we have located a woman’s body.
“Although formal identification has not taken place, we believe this to be Willow.
“Willow’s next of kin have been made aware and are being offered support by officers.
“I would like to thank all of those who shared our appeal, and my thoughts, and the thoughts of all of us at Thames Valley Police are with Willow’s family and friends at this extremely difficult time.”
The woman’s death is being treated as unexplained but not suspicious, and a file will be prepared for the coroner.