TWO raiders held up an assistant at an Oxfordshire off-licence at knifepoint before escaping with cash.

Police said the pair walked into Threshers in Peppard Road, Sonning Common and threatened a shop assistant at 8.45pm on Wednesday.

They fled with cash from the safe after ordering a woman customer to leave the shop.

Det Con Georgina Bradley, of Henley CID, said: "This was a frightening attack for the shop worker involved.

"I am also very keen to trace the young woman who was ordered out of the shop by the offenders. She will have information that could be vital to us and I would appeal to her not to be embarrassed or awkward in coming forward.

"She was in the shop talking to the shop assistant about what to buy her boyfriend's father for his birthday. She was white, in her early to mid-20s, of slight build with brown shoulder-length straight hair.

"I hope that the lady, or her family and friends, will come forward and let us know who she is."

The first offender is described a black man, 6ft 3in tall, with a shaved head. He was stocky to medium build and in his teens or early 20s. He was wearing a black hooded top, with blue jeans and a black belt.

The second offender is white or mixed race, 5ft 6in tall, with short back hair and a black goatee beard. He was also in his late teens to early 20s and wore a cream, hooded top, with blue jeans and white trainers.