Two teenagers have been warned they face jail for robbing a tourist at knifepoint.

Won Kim thought he was going to be killed when a blade was held to his throat during the hold-up in Brighton.

Jack Rolf, 18, and his friend Jack Spencer, 17, had offered to fix their victim up with women.

Mr Kim thought they were taking him to a brothel when they robbed him at the entrance to Waitrose car park in Hampton Place.

The Korean-born victim's throat was nicked by the knife as the teenagers demanded money from him.

Rolf admitted the robbery but denied possessing the knife, while Spencer denied both charges.

But both were found guilty yesterday after a three-day trial at Hove Crown Court.

Judge Cedric Joseph lifted an order preventing Spencer from being named because of his age.

He said: "These are very serious offences and it is right that the public should know that you have been convicted.

"I want you both to understand that the most likely outcome will be a custodial sentence."

Rolf was living with Spencer and his family in Hangleton Road, Hove.

At the time Rolf was already on bail for holding up a pizza delivery man at knifepoint in November.

Mr Kim, 30, who lives in New Jersey in the US, had been visiting Britain on holiday, the court heard.

He came down to Brighton for the day on January 4 and was approached by Rolf and Spencer in Western Road.

He agreed to go with them to the Royal Sovereign pub in Preston Street where they discussed strippers and call girls, the court was told.

After leaving the pub Rolf grabbed him around the neck and held a knife to his throat as the teenagers demanded money from him.

Mr Kim said: "I was terrified. I did not know if I was going to be robbed or killed."

He held out the £100 and $4 he had in his wallet but did not see who snatched it from him because his glasses had been knocked off.

Rolf was remanded in custody but Spencer was granted bail until they are sentenced on May 8.