The mother of a Sheffield teenager has released a picture of his bloodied face after he was knocked off his bike last week, in a bid to track down the motorist involved, who left the scene without leaving their details.

Apprentice IT engineer Taron Stead was riding his bike to work last Friday when he was involved in a collision with a car, reports the Sheffield Star, which has published a picture of the teenager showing bruising and abrasions to his face.

Naomi Pickard, the 17-year-old’s mother, told the newspaper: Taron said the woman in the car got out looked over at him, told him she had children in the car who were upset and she didn’t want them to be late for school, then the car drove off.”

The male driver of the car did not swap details with the teenager before leaving the scene, and he was looked after by staff at Sheffield University’s nearby law school while waiting for paramedics to arrive.

“I can’t believe anyone would leave an injured child at the side of the road after a crash, but it was rush hour and it would have been busy so I am hoping that witnesses come forward and help the police trace the driver,” continued Ms Pickard, who said, “there is CCTV in the area too.”

On her Facebook page, she described the driver of the car as “male, white, bald with a goatee beard and glasses.”

Taron had bought his bike just three weeks earlier from his first wages, and staff at the store who heard about what had happened have said they will repair it without charge.

“We want to thank Halfords for their gesture and also the university staff who looked after Taron and gave him first aid until the paramedics arrived,” said Ms Pickard. “I am grateful that they stayed with him.”

She added: “I hope the driver and his passenger who drove off see Taron’s injuries and think about their actions. Fortunately he was wearing a helmet, or I dread to think what might have happened.”

South Yorkshire Police have appealed for information, with a spokeswoman describing the vehicle involved as “a silver Ford, either a Focus or Mondeo,” and asking anyone with information to contact them on 101.