A man and a young boy were taken to hospital on Good Friday after a stabbing.
Police and London Ambulance Service were called to the scene on a main road at Tulse Hill just before 4:30.
One man, aged 20 suffered a chest injury and is still in hospital, whilst an 18 year old man suffered a cut to his hand.
Both men are said to not be in a serious condition and are currently recovering.
Two teenage boys, aged just 16 and 18 were arrested at the scene of the stabbing and are still in custody.
The Police are asking anyone who might have information about the attack to call Lambeth CID via 101.