The young boy and two women who were injured in a crash on the M1 yesterday afternoon have now left hospital.
They were rushed to St Marys Hospital in Paddington after the two cars they were travelling crashed between Junction 6A and 7 at about 1.15pm.
The air ambulance had been called to treat them but had to turn back due to the fog.
One of the women was treated for injuries to her abdomen, chest and pelvis.
The other women and the boy had minor injuries.