Light and heat burns
The burns suffered by victims of the Parsons Green terror attack will depend on how close they were to the explosion, an expert has said.
Isobel Kearl, national training officer for St John Ambulance, said flash burns are caused by intense heat or light or both.
She said:“The flash is usually over very quickly but the burn can last longer. However, a flash burn can also cause blisters.
“Flash burns are usually associated with explosions.”
A victim posts images of his charred hair on Twitter