Grenfell Tower fire: Moment firefighters first saw the blaze
New footage reveals the horror of one fire crew approaching the Grenfell Tower fire in west London.
A total of 79 people are either dead or missing presumed dead after a huge fire engulfed a west London tower block in the early hours of Wednesday 14 June.
Watch more on BBC Panorama this evening on BBC One at 20:30 BST.