A 21-year-old was rushed to hospital with a head injury after he was attacked with a hammer in a busy south-west London street.

Police were scrambled to Eden Street in Kingston around 8.10am on Saturday, to reports a man was “in possession of hammer, and acting aggressively”.

A man was detained by officers nearby and subsequently arrested on suspicion of causing grievous bodily harm. He remained in police custody on Monday.

The 21-year-old victim was taken to hospital by ambulance.

His injuries are not believed to be life-threatening, Scotland Yard said on Monday.

Police have not yet confirmed whether the victim is thought to be known to the suspect.