A frantic mum was seen screaming after a bus as the driver drove away with her child on board last night.

The driver pulled away from the bus stop outside Centre Court shopping centre in Wimbledon  unaware of the little lone passenger.

Twitter user @daysofspeed said “I just heard her in obvious distress calling out about the bus, looked like member of public consoling her.

"Bus 200 was flagged down, maybe to contact driver of different bus. Lots of help from public.

“She was - understandably - very distressed but calmed when I assume driver said he'd made contact."

Police confirmed the mum and child were later re-united after the incident at about 7.30pm.