THREE teenagers - one of them described as "dangerous" - have pleaded guilty to robbing a 78-year-old man of cash at his remote mobile home near Bromsgrove.

The frightened pensioner, who is blind in one eye and has hearing difficulties, stood up against the door to stop it being opened and handed money through the window during the 25 minute ordeal, Worcester Crown Court heard.

Roger Green had just finished chopping logs at 4pm on September 16 last year and was about to go to bed because his caravan home had no electricity and was lit by candlelight, Dan White, prosecuting, told the court.

The men arrived at his caravan near Bromsgrove, a mile away from any other habitation, and asked him for money to travel to Birmingham. He had just been to the bank to withdraw £300 which he intended to use to live on for six weeks, the court heard.

The robbers kept asking him for more money and did not stop until he had handed over £250. Mr Green told police he was scared they were going to burn a nearby barn and also his caravan.

Harley Clements, aged 19, of Burlingham Avenue, Evesham, 18-year-old Reeve Riley of Craven Court, Evesham, and Nathan Gurney, aged 19, of Crossley Walk, Charford, Bromsgrove, pleaded guilty to robbery.

Sentence was adjourned for a further report on Gurney, who faces other charges and is in custody. Clements and Riley, who admitted they were present but say they did not ask for money, were granted bail.

Gurney has also admitted causing grievous bodily harm with intent and faces a long sentence, the court heard.

He stabbed 20-year-old Sean Robinson with a kitchen knife in Crossley Walk at about 7pm on February 29.

Recorder William Edis, QC, said it was clear from the evidence and his record that Gurney was dangerous but he granted an application by Alexander West, defending, for a psychiatric report to follow on from a pre-sentence report.

Reorder Edis said Gurney had "stabbed someone in the back twice, puncturing his lung and hitting an aorta which had almost killed him."

"Even at 19, he is a very heavily convicted young man and they are not trivial convictions," he said. "The psychiatric report will not say if he is dangerous but how dangerous he is."

They are due to return to court for sentencing In June.